You built one thing and ignored the rest.

You train 3 to 6x a week, and you are sick of feeling stiff, slow and heavy. One jump testing session in your own gym finds the athletic quality holding you back, and your program trains that one.

Start now See how it works

No call to book. One jump testing session, your program 24 hours later. Cancel whenever.

A member, week one
"I've only ever trained like a powerlifter or bodybuilder. Finally at a point where I'm ready for a new challenge. Sick of being stiff and slow."
Darius, posted in the members' room the day he joined.
Watch this first · 2 min 32
Coach Dries on what the GP Method is
Sound familiar

You didn't get worse. You only ever trained one thing.

You've only ever trained like a powerlifter or a bodybuilder, and it shows the second you have to move fast.

Whether your lifts went up or stalled, the stiffness came anyway. You feel heavier and slower than the work you have put in says you should.

You know you should train differently. You don't know which part to fix first, so you keep adding to what you already do.

The barbell is your only scoreboard, so it is the only thing you have proof of. Everything else is a feeling.

It isn't effort, and it isn't your programming discipline. Strong or still building, you have only ever improved the one quality you measure.
Why nothing has worked

Every fix you've tried was a guess.

Every one of them skipped the same step: finding which quality underneath the lifting was never developed. You can't close that gap by working harder at the part you can already do.

Free programs and templates

Written for everyone. Aimed at no one.

A template hands the same sets and reps to a springy athlete and a stiff grinder. It can't train a quality it never measured, so you get better at the program and no better at moving.

More volume, harder sessions

Harder, at the thing you already train.

Extra sessions and heavier top sets grow the quality you already train. The one holding you back stays untouched, so all that work buys you is fatigue and a wider gap.

Bolting on jumps and plyos

Right idea, no target.

Box jumps at the end of leg day are a wrong guess. Getting off the floor hard, applying it fast, and reusing the bounce are three different qualities that fail in different ways. Train the wrong one and you've spent a block on nothing.

The actual problem

Nobody ever tested you.

Not once. You've been putting real effort into the wrong problem, because nobody ever put a number on the right one. Test first and the guessing stops.

Real results

What happens when you train the cause.

These are my online one-on-one clients, running the exact system that is inside the membership: same profiles, same weak-link logic, same app.

Peter S.101 kg, and he'd never trained jumping. Same countermovement jump, 12 weeks apart.
Before · 23.0 cm
After · 30.7 cm
Countermovement jump
23.0→30.7 cm
+7.7 cm
Squat jump
21.3→28.6 cm
+7.3 cm
Vertical quality
57%→77%
against his own target

Both clips are his own test attempts, filmed 12 weeks apart and measured in the app from the video. Same athlete, same phone, same rules for what counts.

Lee M.Weekly check-in, submitted Sunday 5 Jul
Training & Recovery
How did your training feel this week overall?
Training felt really good. Workouts are short but challenging. I'm sore the next day but very manageable. Even on days where I feel slow and sluggish I can still complete the workout without being over exhausted afterwards. Program design is top notch.
Open
Anything else you want your coach to know this week?
Love your program so far. Very precise and well thought up.
BeforeBefore
AfterAfter

Post-ACL surgery, a full rebuild. Agathe profiled what the knee had cost him, trained it back in order, and worked his nutrition alongside it. He's racing Hyrox now.

A
28, post-ACL reconstruction
Full return to training · racing Hyrox · gut issues resolved
Coached one-on-one by Agathe at GP

Fast on the pitch but weak in the gym, and held back by knee pain. I profiled the weak links behind it, built his strength around them, and a few months later the knee pain was gone and his performance had moved with it.

M
Soccer player
85 kg × 2 front squat · +20 kg × 3 weighted chin-ups · knee pain gone · in 6 months
Coached one-on-one by me
The GP Method

I find the gap, then you train it.

One jump testing session in your own gym, and what it finds decides the block you get. It's the same system I run with my one-on-one clients, without the waiting on me.

20-25minutes, once

You get measured properly.

One jump testing session in your own gym. Four movement tests cold, your warm-up, then five jumps, with the app scoring you through every one.

8directions, you get one

Your jumps pick the block.

Your lowest quality names the gap. Your loaded jump says whether it's short on force or speed. I assign the block for your gap and your strength level within 24 hours.

9patterns, scored on what you test

Your strength still gets tracked.

Strength is what everything else is built on, so it stays on the scoreboard. Scored against targets set by your own bodyweight.

A minute and a half on what that jump testing session actually is.

Test day inside the GP Platform app

Eight directions. You focus on one.

The label is what your block trains, not what you already are. Reading Velocity means force is the part you have, and speed is the part you're about to build.

ForceYour loaded jump barely drops. Speed is the gap.
VelocityYour loaded jump collapses. Force is the gap.
01chase speed
Verticalcountermovement + squat jump
chase force02
03chase speed
Horizontalbroad jump
chase force04
05chase speed
Reactivedrop jump
chase force06
07chase speed
All-roundno clear gap, or no jumps yet
chase force08

Nothing stands out, or you've never jumped in your life? You go All-round, which raises every quality at once.

GP PLATFORMJump Profile
Your direction
Reactive · Velocity
Block 05 of the eight
Jump Score
60 / 100
5 jumps completed
Reactive
78% · your lowest
Drop jump off a 30 cm box · RSI 1.56 → target 2.00
Force to Velocitybalanced · 26% drop
From your loaded CMJ against your unloaded one
GENERAL ATHLETIC 25-33%
10%25%40%50%
General athletic asks for 25 to 33%. You're at 26%, just inside it, so the loaded jump doesn't decide your direction on its own.
Poor to Elastictypical (EUR 1.15)
From your squat jump against your CMJ
POORELASTIC
Weak link
Reactive strength
Named on the card, in words, with the finding written underneath. Retested at week 12, and the retest can change your direction.
Why this block
rowReactive is your lowest quality at 78%, 18 points below your best.
axisYour loaded jump sits inside the band, so it doesn't decide it. Your jumps sit further behind than your strength does.
soThe block trains velocity: short contacts and light, fast work.

Jump Profile, straight out of the app. Yours is built from your own jumps.

GP PLATFORMForce Profile
Strength level
Intermediate
Nine patterns, each against a target set by your bodyweight
Weakest pattern
Lower Mixed
21% below target
Upper body
Horizontal Push
96%
Bench press 107 kg → target 111 kg
Vertical Push
82%
Overhead press 60 kg → target 73 kg
Horizontal Pull
90%
Pendlay row 85 kg → target 94 kg
Vertical Pull
114%
Weighted chin-up 110 kg → target 97 kg
Overhead Drive
not tested
Push press · never done it, so it stays blank
Lower body
Lower Mixed
79% · your lowest
High-bar back squat 116.7 kg → target 148 kg
Lower Hip Dominant
107%
Conventional deadlift 190 kg → target 178 kg
Lower Knee Dominant
93%
Front squat 116.6 kg → target 126 kg
Lower Drive
122%
Trap bar deadlift 253 kg → target 207 kg

One of the nine is empty. A lift you have never done stays blank and scores as not tested. The other eight still score, your weak link is still found, and nothing waits on the gap.

Weak link
High-bar back squat
116.7 kg against the 148 kg your bodyweight asks for, a 21% gap, while your trap bar pulls 122% of its target. Strong is not one number, and this is the pattern the next block puts first in the session.

Force Profile, same app. Your strength doesn't stop counting here; it just stops being the only thing measured.

See the two plans
What ELSE you get

Everything that lands in your app.

Under two minutes inside the real app.

Inside the GP Platform app
The block
Three phases in a block
3 × 4 weeks
Strength sessions a week
3 to 4
Optional speed sessions
1 to 3 a week
A session
60 to 75 min
In the app
You retest and the card redraws
Every 12 weeks
Swap any exercise
Two taps
The app counts the rep out
Tempo played
Speed sessions in the members' room
Three, new monthly

A real week inside the app.

Three strength sessions and two optional speed sessions, every set, rep, tempo and rest already written. Exercises sharing a letter run back to back before you rest.

9:41GP PLATFORM
All-Round / Velocity
Phase 1 of 3 · week 1 of 4
1Session 17 exercises · Full BodyDone
2Acceleration6 exercises · Speed, optionalDone
3Session 28 exercises · Full BodyStart
4Multidirectional6 exercises · Speed, optionalView
5Session 37 exercises · Full BodyView
Phase 3 opens at week 9. At week 12 you test again, and a new lowest quality means a new direction.
9:41GP PLATFORM
Full Body
Session 1
7 exercises · 60 to 75 min
A1Line Hops3 x 20s ea · 30 rest
A2Drop Jump - To Box3 x 3 · X · 60 rest
B1Squat - BB High Bar4 x 6 · 2210 · 10 rest
B2Dead Bug - Weighted4 x 8-10 ea · 180 rest
C1Bench Press - DB Incline2-3 x 12 · 2010 · 10 rest
C2Row - DB Prone2-3 x 12,10,8 · 2012 · 10 rest
C3Side Plank w/ Abduction2-3 x 20sec ISO + 10x · 120 rest
Speed
Acceleration
6 exercises · needs 30 m and a sled
Warm up · 10 m eachKnee Hug, Glute Stretch, Quad Stretch with ReachOpen the Gate, Close the Gate, SLRDL to Lunge, Hamstring SwipesLateral Lunge with Hop, Pogo, Backward Pogo, Lateral PogoA March, A Skip, A Hop, High Knees
A1Broad Jump - SL3 x 2 each · X · 30 rest
A2Standing Triple Jump3 x 2 each · X · 30 rest
A3Bounds - LRLR3 x 20 m · X · 180 rest
B1Sled Resisted Sprints4 x 10 m · X · 180 rest
B2Sprint - 5-20 m4 x 20 m · X · 240 rest
C1Sprint Float Sprint3 x 10-20-10 m · X · 240 rest
Full Body
Session 2
8 exercises · 60 to 75 min
A1Bench Press - BB4 x 6 · 3010 · 120 rest
A2Pull-Up - Bodyweight4 x MAX · 2222 · 120 rest
B1Depth Drop3 x 3 · X · 10 rest
B2Bulgarian Split Squat - DB3 x 4-6 · 2010 · 10 rest
B3RDL - SL - Landmine3 x 6-8 · 2210 · 120 rest
C1Curl - DB Incline2-3 x 6-8 · 2010 · 10 rest
C2Skullcrusher - DB Decline2-3 x 6-8 · 2010 · 10 rest
C3Lateral Raise - DB2-3 x 12 · 2011 · 120 rest
Speed
Multidirectional
6 exercises · needs 10 m, a line and 2 bands
Warm up · 10 m eachKnee Hug, Glute Stretch, Quad Stretch with ReachOpen the Gate, Close the Gate, SLRDL to Lunge, Hamstring SwipesLateral Lunge with Hop, Pogo, Backward Pogo, Lateral PogoA March, A Skip, Lateral March, Lateral Skip
A1High Knees into Decel into Run Back3 x (3 x 6 m) · rest as needed
A2Over & Back Line Drill3 x 3 reps · rest as needed
A3Hockey Stop Switches3 x 5 each · full rest
B1Resisted Continuous Skater3 x 8 m each · walk back
B2Unresisted Continuous Skater with Single Leg Hop3 x 8 m each · full rest
C1Resisted 4 Way2 x (4 each x 4 m) · rest until sharp
Full Body
Session 3
7 exercises · 60 to 75 min
A1Deadlift - Trap Bar - B Stance4 x 5 ea · 21X0 · 30 rest
A2Broad Jump - SL4 x 3 ea · X · 150 rest
B1Z Press - DB Alternating3 x 6-8 ea · 2010 · 10 rest
B2Row - DB Single Arm3 x 12 ea · 2010 · 120 rest
C1Copenhagen Plank - Long Lever2-3 x 30sec ea · 10 rest
C2Hip Flexor Plank2-3 x 30sec ea · 10 rest
C3Hamstring Hold - Long Lever2-3 x 30sec ea · 120 rest

Tap any session on the left and the right phone opens it. Both screens scroll, the same way they do in your hand.

In the members' room

Three optional speed sessions, swapped at the start of every month. One acceleration, one absolute speed, one multidirectional, written out rep by rep with the warm-up in front of them. They sit next to your own training, they do not replace it.

Not just a program, but a platform.

NUTRITIONToday
PortionsMacros
Perform · 4 meals
Training dayRest
Proteinpalms
3/5
Carbscupped hands
7/12
Vegetablesfists
4/6
Fatsthumbs
2/6

Tap a box each time you eat that portion. No logging, no grams.

Your hand is the scalePalms, cupped hands, fists and thumbs, and the targets shift on rest days by themselves. Rather count grams? Switch the same tracker to macros yourself, any day, without losing what you've already logged.
SELF HUBPersonality
Your personality type
The Bulldozer
Intensity

You are built for intensity. You thrive on heavy loads, grinding effort, and dominating outcomes. Frequency and load are your tools. Volume and variety drain you.

Your top recovery tip

You recover from hard training faster than almost anyone, but your high drive runs you hot. Protect sleep and downtime so the intensity doesn't tip into burnout.

Your top 3 supplements

› Creatine, 5g a day. Backs up your heavy, low-rep strength work.

› Caffeine before training, not late in the day.

› Magnesium before bed. Your high drive burns through it.

How you respond to trainingFive types. Yours changes the recovery, the nutrition and the supplements you are told help you perform better.
PROGRESSWorkout PRs
Workout PRs (last 12 weeks)Show all-time
Pin Zercher Squat - BB e1RM237 lbsyesterday
RDL - BB e1RM230 lbsyesterday
Row - DB Prone e1RM90 lbsyesterday
Deadlift - Trap Bar e1RM369 lbs6 days ago
Lunge - Reverse BB e1RM186 lbs6 days ago
Proof, not luckEvery PR is found for you, straight from the sets you logged.
After you join

Your first week, and the twelve after it.

No waiting around to find out what you paid for.

Minute 1

You're in

Password, then four dropdowns. No call to book.
First gym day

You test yourself

20 to 25 minutes. Four movement tests cold, warm-up, five jumps.
Straight after

Your card is drawn

Your direction, your scores, and the reasoning written out.
Within 24 hours

Your block lands

I read your session and assign the block for your direction, at your strength level.
Week 5

The next phase opens

Same direction, more asked of you. Phase three at week 9.
Week 12

You test again

Same session as day one. A new lowest quality means a new direction.
Start now
Coach Dries
Why Dries

I trained to get strong and big, and it left me tight, heavy, and slow.


For years, I chased a lean, muscular physique and the big three. The numbers went up, and so did everything I didn't want. I got even tighter. I felt heavy and slow. And eating for that size pushed my gut health further in the wrong direction. I was "strong," and I'd never felt less athletic.

In early 2025, I got the opportunity to prep athletes for the NFL Combine, which showed me what real athletic training looks like and put my weak links right in front of me. I'd built one quality, big-three strength, and ignored the rest. So that's what I changed: strength isn't just the big three, it's athletic, it's unilateral, and the big three.

But here's where it really matters. I took everything and applied it to myself and my clients. I'm not stronger on the big three than I was. But I'm faster, more explosive, more mobile, and more athletic than I've ever been, and my gut is in a much better place. And the results my clients achieved. Issues that I couldn't seem to figure out suddenly all made sense.

That's the GP Method: I find the weak link holding you back, whatever it turns out to be, and point your training straight at it.

MSc Strength & Conditioning @ ALTIS (in progress) EXOS Performance Specialist Pre-Script Level 3 Mentorships across North America & Europe Nutrition and health coaching credentials

The best version of your body isn't behind you.

One testing session, a program built for what it finds, and a retest twelve weeks later to prove it moved.

See the two plans
Pricing

Two options. No hidden costs.

Same program, same coach, same full access on both. The 12-week plan simply runs one full block, start to retest, which is why it costs less.

Flexible
€59
every 4 weeks, 13 times a year · cancel anytime
Start with one phaseFour weeks is one training phase. No lock-in.
Start now
14 days, money back. Not worth continuing? Message me and I refund you in full.
Best value
12 weeks · one full block
€129
every 12 weeks · cancel anytime · about €43 per 4 weeks
Your retest is at week 12This plan runs one full block, start to proof. Save €48.
Start a full block
14 days, money back. Not worth continuing? Message me and I refund you in full.
Nutrition: White Belt Mastery course
€27Free
Included with both plans

Nutrition: White Belt Mastery

Build the plate
  • The 95% nobody sells you
  • Build your plate by hand
  • Protein, the one you can't get wrong
  • Your day, meal by meal
Eat around training
  • Eating around training
  • Eat to recover faster
  • Hard day, rest day
Stay lean, stay powerful
  • What changes after 30
  • Get lean, stay powerful
  • The 5% that is worth it
Ten lessons, in your library the day you join, on either plan. On the 12-week plan they're yours to keep, even if you cancel.
Everything included in both plans

Performance

  • ✓A block assigned for your direction and your strength level, or All-round if nothing stands out
  • ✓Force, Movement, Jump and Conditioning profiles, run every 12 weeks
  • ✓Your ARC Profile, redrawn at every retest
  • ✓Workout logging, PR tracking and exercise swaps
  • ✓A warm-up written from your own movement screen

    • Health

  • ✓Hand portions or macros, your pick, with a daily tracker
  • ✓Sleep, bodyweight and girth tracking
  • ✓A daily check-in board you build yourself, up to eight trackers
  • ✓Pain map to log what hurts, where, and whether it's shifting

    • Self

  • ✓Personality profile: your type, and how to train, eat and recover for it
  • ✓Breathwork, meditation and quick resets
  • ✓Goals and daily habits you set yourself

    • Community

  • ✓The members' room, with me in it
  • ✓Three optional speed sessions, swapped every month
  • ✓Coach answers in front of everyone, so nobody asks twice
  • ✓Your course library, with Nutrition: White Belt Mastery included

    • Questions before joining? DM me on Instagram · @driesgrossen

    14-day guarantee.
    If it's not right for you, you get your money back.

    Join, run your testing session, and start your first week. If you don't think it's worth continuing, for any reason, message me within 14 days and I'll refund you in full. No friction. I'd rather know why it wasn't the right fit than keep money I didn't earn.

    Questions

    Answered with clarity.

    You've never seen me lift. How can you write my program?
    I don't have to. You test yourself, in your own gym, on protocols the app walks you through with a video and a clear rule for what counts. Four movement tests and five jumps, 20 to 25 minutes. That session plus your intake is what I read before I assign your block. Be clear on what that means: you get the block I wrote for your direction, loaded to your strength level, not a program written around you from scratch. That is online one-on-one coaching, and it is a different service.
    Is this the right level for me?
    In both directions, yes. Every strength target is set by your own bodyweight and every jump is scored against where you sit now, so nothing here asks you to hit somebody else's number. Strong does not make it basic: a big squat with a loaded jump that barely drops means speed is your gap, and that is a different block from the one a weaker athlete gets. Never jumped in your life? You go to All-round and raise every quality at once. Expect some of it to feel too easy at first. Jumps and throws are produced fresh, and grinding them produces nothing.
    Do I actually get to talk to you?
    In the members' room, yes, and that's where I answer. Straight answer on what this is not: there's no private inbox, no weekly check-in and no form-check video review. Those are online one-on-one coaching. What you get from me directly is the part that decides your training. I read your testing session and assign the block for your direction at your strength level, and I do it again at every retest.
    How do I measure a jump without a jump mat?
    With your phone. You film the jump and the app reads the height off the video, so there is nothing to measure by hand and nothing to buy: no mat, no force plate, no timing gates. Set your camera to 60 frames per second first, because most phones ship at 30. Film from the front with your feet and the floor in shot. Then you mark two frames, the first one with nothing touching the ground and the first one with something touching again, and the app works out the rest. The clip never leaves your phone. If you would rather not film, you can type the height straight in or enter a flight time instead. The broad jump is the only one you measure yourself, because it is a distance, so that one is a tape on the floor.
    What equipment do I need?
    A normal gym covers it: a barbell, dumbbells, a rack, and somewhere to pull. You can swap any exercise in the app in two taps if the machine's taken or you don't have it. The jump work needs a few metres of clear floor and, for the drop jump, a firm box. You pick 30 cm or 45 cm once and stay on it for good, because a rebound off a different height is a different number and wouldn't be comparable to your own retest. The optional speed sessions each ask for something different: acceleration wants about 30 m and a sled, absolute speed wants 40 m, and multidirectional needs only 10 m, a line on the floor and two bands. Every one of them has a swap written in if you are missing the kit.
    How long until I see results?
    Your weak link starts moving in the first four to eight weeks. The bigger, measurable change shows at your first retest in week 12, the earliest point the numbers actually say something. Anyone promising faster is selling something.
    Can I cancel, and what happens if I do?
    Cancel any time, from either plan. You keep access until the period you've paid for runs out, so nothing disappears the day you cancel. Inside the first 14 days you get your money back in full. Your profiles and your training history stay on your account if you come back.

    You haven't peaked. You've only ever trained half of what you are.

    One session names the half you've been missing. One block trains it. Every 12 weeks you test again, and the target moves.

    Start now
    Privacy Policy

    Last updated 22 July 2026. Grossen Performance (Coach Dries) is responsible for the data described here. Contact dries@grossenperformance.com.

    What is collected. When you visit: technical data such as IP address, browser, device and pages viewed, plus the advertising identifiers below. When you join: name, email and billing details, with card details going directly to Stripe and never stored by Coach Dries. When you use the app: the training and health information you enter, including lifts, sets and reps, test results, measurements, check-in answers and goals. When you email: the content of what you send.

    Why. To run your membership and build your program, to take payment and handle refunds, to send membership email and marketing email you asked for (every marketing email has an unsubscribe link), and to measure how this page performs.

    Who it is shared with. Only the services needed to run the business: Stripe for payments, MailerLite for email, Leadpages for hosting this page, Supabase and Cloudflare for the GP Platform app and its data, and Meta through the pixel on this page for advertising measurement. Your training data is never sold and never shared with other members.

    Cookies and the Meta pixel. This page runs the Meta pixel, which sets cookies and reports page views back to Meta so ads can be measured. You can block it in your browser or through your Meta ad preferences without losing access to anything here.

    How long. Your account and training history are kept while your membership is active, and afterwards so your profiles are still there if you come back. Ask for deletion at any time and it is removed. Payment records are kept as long as tax rules require.

    Your rights. You can ask to see, correct, export or delete your data, and withdraw consent for marketing email at any time. Email the address above and it is handled within 30 days.

    The GP Method is not intended for anyone under 16. If this policy changes, the date above changes with it.

    Terms

    Last updated 12 August 2026. These terms cover the GP Method membership, sold by Grossen Performance (Coach Dries). Joining means you accept them.

    What you are buying. A membership to the GP Platform: a periodised training block matched to your Jump Profile and goals, the Force, Movement, Jump and Conditioning profiles, workout logging and PR tracking, the nutrition and check-in tools, the Self Hub, the members community and your course library. Blocks are written for your direction by Coach Dries after reading your testing session, not generated automatically. Fully bespoke online one-on-one coaching is a separate service.

    Price and billing. €59 billed every 4 weeks until cancelled, which is 13 payments a year. €129 billed every 12 weeks until cancelled. The Nutrition: White Belt Mastery course is included on both. Payment is taken through Stripe, prices are in euros, and renewal is automatic unless you cancel first.

    Cancelling. Cancel at any time. You keep full access until the end of the period you have paid for and you are not billed again. Your profiles and training history stay on your account if you come back.

    14-day guarantee. If you do not think it is worth continuing, for any reason, message within 14 days of your first payment and you get a full refund.

    Your account. Your login is for you. Do not share it, and do not redistribute, resell or republish the programs, courses or profile results. You keep ownership of the data you enter and hold a personal, non-transferable licence to use the content while your membership is active.

    Health and training risk. Strength training carries risk. The GP Method is coaching and education, not medical advice, and nothing in the app diagnoses or treats a medical condition. Check with a doctor before starting if you have an injury, a health condition or any doubt. You train at your own risk and are responsible for your own technique and load selection.

    What is not promised. Results depend on your training, recovery, nutrition and consistency. Client results shown on this site are real and individual, and are not a guarantee of what you will achieve.

    Account termination and changes. Access may be ended, with a pro-rata refund of any unused paid period, if an account is shared, content is redistributed, or a member behaves abusively toward the coach or the community. These terms and the price may change; existing members are told by email before a price change applies.