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Y3T
Intermediate–AdvancedFree

Y3T

Massive hypertrophy

Jake K.
Jake K.· Nov 2025
4athletes running this program
iOS & Android

Overview

Length
3 weeks
Days / week
4 days
Level
Intermediate, Advanced
Goal
Muscle, Women's
Equipment
Full Gym
Session length
90 min
Nut up or shut up, do the work, don’t skip. Use rest-pause in between sets.

Who it's for

Athletes at the Intermediate–Advanced level
Athletes focused on building muscle size
Athletes who can train 4 days per week
Athletes with access to a full gym (barbells, dumbbells, cables, and machines)

Muscle engagement

Front
Back
Triceps
12%
Hamstrings
10.1%
Front Delts
9.9%
Quadriceps
9.2%
Upper Back
9%
Chest
7.9%
Glutes
7.4%
Biceps
7.1%
Middle Delts
6%
Lats
5.8%
Calves
4.4%
Rear Delts
3.3%
Lower Back
2.9%
Abs
2.3%
Adductors
1.4%
Forearms
1.1%
Abductors
0.3%
Week 1 Workouts
#ExerciseSetsReps
1Leg Press (45 Degrees)38 reps
2Squat (Barbell)38 reps
3Bulgarian Split Squat (Dumbbell)38 reps
4Leg Extension38 reps
5Stiff Leg Deadlift38 reps
6Leg Curl48 reps
7Single-Leg Leg Curl38 reps
#ExerciseSetsReps
1Bench Press (Dumbbell)38 reps
2Incline Bench Press (Dumbbell)38 reps
3Iso Lateral Decline Press38 reps
4Incline Bench Press (Barbell)38 reps
5Skull Crusher (Barbell)38 reps
6Tricep Extension (Cable)48 reps
7Tricep Pushdown (Cable)38 reps
#ExerciseSetsReps
1Seated Row (Cable)38 reps
2Bent Over Row (Dumbbell)38 reps
3Rack Pull (Barbell)38 reps
4Lat Pulldown (Close Grip)38 reps
5Bicep Curl (Dumbbell)48 reps
6Bicep Curl (Barbell)38 reps
7Bicep Curl (Cable)38 reps
#ExerciseSetsReps
1Seated Shoulder Press (Dumbbell)48 reps
2Lateral Raise (Dumbbell)48 reps
3Front Raise28 reps
4Rear Delt Row48 reps
5Seated Calf Raise48 reps
6Standing Calf Raise48 reps

Weeks 2–3 are in the app

Download Boostcamp to follow the full program with auto-progression and built-in coaching notes.

Common questions

Yes, Y3T is completely free to follow on Boostcamp. Download the app on iOS or Android, find the program, and start your first workout immediately. All 3 weeks are fully unlocked.

This program is built around a full gym. Make sure you have consistent access before starting, since the progression model assumes you can perform the same movements week over week.

Each session typically takes around 90 minutes to complete. That estimate covers your working sets but doesn't account for warm-up or rest between sets, so budget a little extra time when you're first learning the movements.

Y3T is structured around 4 training days per week, with rest days built in to allow for recovery. The Boostcamp app lets you reschedule sessions if your week doesn't go to plan.

The program runs for 3 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

Y3T is available inside the Boostcamp app, free on iOS and Android. Once you download the app, you can search for the program by name. The app tracks all your sets and weights automatically, so you always know exactly what to do next session.

Get started

Boostcamp app
11,000+ free programsStrength, hypertrophy, powerlifting and more, from elite coaches. All free.
Auto-progressionWeights and targets update automatically based on how you perform.
Coaching notesBuilt-in cues from the creator inside every workout session.
Progress trackingLog every set and see your strength gains over weeks and months.
Advanced analyticsTrack volume, intensity, and 1RM trends to see exactly how your training is evolving.
Free on iOS & Android