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Muscle Builder
All LevelsFree

Muscle Builder

Transform your physique in 18 weeks with targeted workouts that sculpt and define your muscles—commit to the journey, see the results.

Bhavin S.
Bhavin S.· Nov 2025
Free on iOS & Android

Overview

Length
18 weeks
Days / week
5 days
Level
Beginner, Intermediate, Advanced
Goal
Muscle, Women's
Equipment
Full Gym
Session length
60 min
Unlock your potential with the Muscle Builder program, an 18-week journey designed to sculpt and strengthen your physique. Committing just 60 minutes a day, five days a week, you'll engage in a comprehensive bodybuilding routine that caters to all skill levels, from beginners to advanced lifters. Utilizing a full gym, this program focuses on hypertrophy and muscle definition, ensuring you build size and strength effectively. Get ready to transform your body and elevate your fitness game!

Who it's for

Athletes of all experience levels
Athletes focused on building muscle size
Athletes who can train 5 days per week
Athletes with access to a full gym (barbells, dumbbells, cables, and machines)

Muscle engagement

Front
Back
Abs
12.5%
Hamstrings
10.7%
Quadriceps
10.1%
Upper Back
9.5%
Triceps
8.7%
Glutes
8.6%
Lats
7.1%
Front Delts
6.8%
Biceps
6.3%
Chest
5.2%
Middle Delts
3%
Forearms
3%
Calves
2.7%
Lower Back
2.2%
Adductors
1.6%
Cardio
0.8%
Abductors
0.8%
Rear Delts
0.5%
Week 1 Workouts
#ExerciseSetsReps
1Squat (Barbell)16–10 reps
16–10 reps
16–10 reps
2Bent Over Row (Barbell)16–10 reps
16–10 reps
16–10 reps
3Bent Over Row (Barbell)18–12 reps
18–12 reps
18–12 reps
4Romanian Deadlift (Barbell)18–12 reps
18–12 reps
5Overhead Press (Barbell)18–12 reps
18–12 reps
6Overhead Tricep Extension (Cable)110–15 reps
110–15 reps
7Bicep Curl (EZ Bar)110–15 reps
110–15 reps
#ExerciseSetsReps
1Cardio130 min
Superset
2AAbs Crunch (Bodyweight)1AMRAP
1AMRAP
1AMRAP
2BReverse Abs Crunch (Bodyweight)1AMRAP
1AMRAP
1AMRAP
2CPlank1AMRAP
1AMRAP
1AMRAP
#ExerciseSetsReps
1Deadlift (Barbell)15–8 reps
15–8 reps
15–8 reps
2Incline Bench Press (Dumbbell)18–12 reps
18–12 reps
18–12 reps
3Pull-Up (Assisted)16–10 reps
16–10 reps
16–10 reps
4Leg Press110–15 reps
110–15 reps
110–15 reps
5Lateral Raise (Cable)112–15 reps
112–15 reps
6Leg Curl110–15 reps
110–15 reps
7Bench Press (Close Grip)18–12 reps
18–12 reps
#ExerciseSetsReps
1Cardio130 min
Superset
2AAbs Crunch (Bodyweight)1AMRAP
1AMRAP
1AMRAP
2BReverse Abs Crunch (Bodyweight)1AMRAP
1AMRAP
1AMRAP
2CPlank1AMRAP
1AMRAP
1AMRAP
#ExerciseSetsReps
1Front Squat (Dumbbell)18–12 reps
18–12 reps
18–12 reps
2Bench Press (Dumbbell)18–12 reps
18–12 reps
18–12 reps
3One Arm Bent Over Row18–12 reps
18–12 reps
18–12 reps
4Walking Lunge (Dumbbell)110–12 reps
110–12 reps
5Face Pull115–20 reps
115–20 reps
6Preacher Curl (EZ Bar)110–15 reps
110–15 reps
7Standing Calf Raise112–20 reps
112–20 reps

Weeks 2–18 are in the app

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

Common questions

Yes, Muscle Builder is completely free to follow on Boostcamp. Download the app on iOS or Android, find the program, and start your first workout immediately. All 18 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 60 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.

Muscle Builder is structured around 5 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 18 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

Muscle Builder 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
Auto-progressionWeights and targets update automatically based on how you perform.
Training logLog every set and track your weights automatically each session.
Progress trackingSee your strength gains over weeks and months with built-in analytics.
1,000+ free programsStrength, hypertrophy, powerlifting and more — from elite coaches and the community. All free.
Advanced analyticsTrack volume, intensity, and 1RM trends to see exactly how your training is evolving.
Free on iOS & Android