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BE BIG : 3 DAYS SPLIT
IntermediateFree

BE BIG : 3 DAYS SPLIT

Build muscle

Gabriel T.
Gabriel T.· Jan 2025
iOS & Android

Overview

Length
12 weeks
Days / week
4 days
Level
Intermediate
Goal
Muscle, Women's
Equipment
Full Gym
Session length
90 min
Hypertrophy

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
16.1%
Chest
15.7%
Upper Back
14.6%
Biceps
13.9%
Front Delts
12.1%
Lats
11.2%
Middle Delts
5.8%
Quadriceps
2.8%
Hamstrings
2.8%
Rear Delts
2.5%
Forearms
1.9%
Abs
0.4%
Week 1 Workouts
#ExerciseSetsReps
1Bench Press (Barbell)412–15 reps
2Incline Bench Press (Barbell)312–15 reps
3Incline Chest Fly (Dumbbell)312–15 reps
4Cable Crossover312–15 reps
5Tricep Pressdown412–15 reps
6Lying Tricep Extension (Barbell)312–15 reps
7Tricep Extension (Machine)312–15 reps
#ExerciseSetsReps
1Single Arm Iso Row412–15 reps
2Single Arm High Row (Cable)312–15 reps
3Wide Grip Lat Pulldown312–15 reps
4Seated Row (Cable)312–15 reps
5Preacher Curl (Barbell)412–15 reps
6Incline Curl (Dumbbell)312–15 reps
7Bicep Curl (Machine)312–15 reps
#ExerciseSetsReps
1Seated Shoulder Press (Dumbbell)412–15 reps
2Lateral Raise (Dumbbell)312–15 reps
3Front Raise312–15 reps
4Rear Delt Fly (Cable)312–15 reps
5Shrug (Dumbbell)120 reps
6Leg Extension412–15 reps
7Leg Curl412–15 reps
#ExerciseSetsReps
1Incline Bench Press (Smith Machine)412–15 reps
2Chest Fly (Machine)312–15 reps
3Chest Supported Row (Machine)412–15 reps
4Standing Pullover (Cable)312–15 reps
5Bicep Curl (Cable)412–15 reps
6Overhead Tricep Extension (Cable)412–15 reps

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, BE BIG : 3 DAYS 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.

BE BIG : 3 DAYS 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.

BE BIG : 3 DAYS 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.
Free on iOS & Android