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4-Day Bro Split
IntermediateFree

4-Day Bro Split

Jacob T.
Jacob T.· Mar 2025
19athletes running this program
iOS & Android

Overview

Length
12 weeks
Days / week
4 days
Level
Intermediate
Goal
Muscle
Equipment
Full Gym
Session length
90 min
This novice to intermediate program will absolutely destroy each muscle group on its respective day. With exercises focused on increasing strength as well as size, with a bit of calisthenics sprinkled in there to get you that strength to bodyweight if you like that kinda thing.

Who it's for

Intermediate athletes ready for a structured program
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
15.6%
Upper Back
10.3%
Front Delts
10%
Biceps
9.4%
Chest
8.1%
Lats
7.5%
Hamstrings
6.6%
Quadriceps
5.6%
Glutes
5.6%
Forearms
4.7%
Rear Delts
3.8%
Abs
3.8%
Middle Delts
3.8%
Calves
2.5%
Lower Back
1.9%
Adductors
0.9%
Week 1 Workouts
#ExerciseSetsRepsLoad
1Bench Press (Barbell)23–5 reps@9
2Larsen Press (Barbell)28–12 reps@9
3Incline Bench Press (Dumbbell)26–10 reps@9
110–15 reps@9
4Dip (Weighted)38–12 reps@10
5Tricep Pushdown (Cable)38–12 reps@9
6Chest Fly (Cable)38–12 reps@9
7Skull Crusher (Barbell)38–12 reps@9
#ExerciseSetsRepsLoad
1Pull-Up (Weighted)38–12 reps@9
2Seated Row (Cable)36–10 reps@9
3Lat Pulldown (Neutral Grip)36–10 reps@9
4Chest Supported Row (Machine)38–12 reps@9
5Hammer Curl38–12 reps@9
6Face Pull38–12 reps@9
7Incline Curl (Dumbbell)38–12 reps@9
#ExerciseSetsRepsLoad
1Squat (Barbell)23–5 reps@9
18–12 reps@9
2Romanian Deadlift (Barbell)26–10 reps@9
110–15 reps@9
3Hip Thrust (Barbell)26–10 reps@9
110–15 reps@9
4Leg Extension38–12 reps@9
5Lying Leg Curl38–12 reps@9
6Standing Calf Raise38–12 reps@9
110–15 reps@9
#ExerciseSetsRepsLoad
1Overhead Press (Barbell)23–5 reps@9
18–12 reps@9
2Reverse Bicep Curl (EZ Bar)38–12 reps@9
3Tricep Pushdown (Cable)38–12 reps@9
4Lateral Raise (Cable)38–12 reps@9
5Incline Curl (Dumbbell)38–12 reps@9
6Skull Crusher (Barbell)38–12 reps@9
7Rear Delt Fly (Cable)38–12 reps@9

Weeks 2–12 are in the app

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

Common questions

Yes, 4-Day Bro Split is completely free to follow on Boostcamp. Download the app on iOS or Android, find the program, and start your first workout immediately. All 12 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.

4-Day Bro Split 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 12 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

4-Day Bro Split 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
1,000+ 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.
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