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Jacks muscle building program
IntermediateFree

Jacks muscle building program

Transform your physique in just 8 weeks with targeted workouts designed to sculpt and strengthen—your garage gym is your new powerhouse!

Charles T.
Charles T.· Nov 2025
iOS & Android

Overview

Length
8 weeks
Days / week
3 days
Level
Intermediate
Goal
Muscle, Women's
Equipment
Garage Gym
Session length
40 min
Unlock your muscle-building potential with this 8-week program designed to sculpt and strengthen your physique. Comprising 10 training days each week, you'll engage in a variety of exercises targeting all major muscle groups, including barbell squats, leg curls, and bench presses. Each session lasts approximately 40 minutes, making it perfect for those with a busy schedule. Tailored for intermediate lifters, this program will challenge your limits and help you achieve the sculpted body you've always wanted, all from the comfort of your garage gym. Get ready to elevate your training and see real results!

Who it's for

Intermediate athletes ready for a structured program
Athletes focused on building muscle size
Athletes who can train 3 days per week
Athletes who train in a garage gym (barbell, rack, and basic free weights)

Muscle engagement

Front
Back
Chest
18.2%
Lats
13.3%
Triceps
11.1%
Upper Back
11%
Biceps
10.2%
Front Delts
8.9%
Quadriceps
8.3%
Hamstrings
6.6%
Calves
5.5%
Glutes
3.3%
Adductors
1.7%
Abs
0.8%
Forearms
0.8%
Week 1 Workouts
#ExerciseSetsReps
1Squat (Barbell)315 reps
2Leg Extension312 reps
3Lying Leg Curl312 reps
4Calf Raise (Bodyweight)430 reps
#ExerciseSetsReps
1Bench Press (Barbell)415 reps
2Incline Bench Press (Dumbbell)315 reps
3Landmine Press315 reps
4Push Up30 reps
#ExerciseSetsReps
1Bent Over Row (Barbell)412 reps
2Single Arm Landmine Row312 reps
3Lat Pulldown415 reps
4Bicep Curl (Barbell)315 reps

Weeks 2–8 are in the app

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

Common questions

Yes, Jacks muscle building program is completely free to follow on Boostcamp. Download the app on iOS or Android, find the program, and start your first workout immediately. All 8 weeks are fully unlocked.

This program is built around a garage 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 40 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.

Jacks muscle building program is structured around 3 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 8 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

Jacks muscle building program 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
14,000+ free programsStrength, hypertrophy, powerlifting and more, from elite coaches. All free.
Auto Progression (Pro)Weights 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 analytics (Pro)Track volume, intensity, and 1RM trends to see exactly how your training is evolving.
Free on iOS & Android