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4 day upper/lower split
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4 day upper/lower split

Let's dig up her cat and fckn crucify it โ™Ÿ๏ธ๐Ÿซ‚

Lesavage
Lesavageยท Mar 2026
2athletes running this program
Free on iOS & Android

Overview

Length
18 weeks
Days / week
4 days
Level
Advanced
Goal
Athletics
Equipment
Full Gym
Session length
90 min
To be a beast

Who it's for

Advanced athletes looking to push past plateaus
Athletes focused on athletics
Athletes who can train 4 days per week
Athletes with access to a full gym (barbells, dumbbells, cables, and machines)

Muscle engagement

Front
Back
Abs
11.9%
Upper Back
10.1%
Quadriceps
9.9%
Front Delts
8.6%
Glutes
8.3%
Triceps
7.8%
Hamstrings
7.5%
Chest
6.2%
Lats
6.2%
Biceps
5.2%
Rear Delts
3.9%
Middle Delts
3.1%
Forearms
3.1%
Calves
3.1%
Adductors
2.6%
Lower Back
2.3%
Week 1 Workouts
#ExerciseSetsReps
1Incline Bench Press (Barbell)30 reps
2Wide Grip Lat Pulldown30 reps
3Seated Row (Machine)30 reps
4Dip (Assisted)30 reps
5Lateral Raise (Dumbbell)30 reps
6Rear Delt Fly (Cable)30 reps
7Alternating Dumbbell Curl10 reps
8Hammer Curl (Dumbbell)30 reps
9Back Extension30 reps
#ExerciseSetsRepsLoad
1Bench Press (Dumbbell)112 reps@7.5
110 reps@7.5
18 reps@7.5
2Pull-Up (Assisted)112 reps@7.5
110 reps@7.5
18 reps@7.5
3T-Bar Row30 repsโ€”
4Incline Bench Press (Barbell)30 repsโ€”
5Arnold Press30 repsโ€”
6Rear Delt Fly (Cable)30 repsโ€”
7Hollow Hold31 min@7.5
8Abs Crunch (Bodyweight)30 repsโ€”
#ExerciseSetsReps
1Squat (Dumbbell)30 reps
2Single Leg Romanian Deadlift30 reps
3Step-Up (Weighted)30 reps
4Standing Calf Raise30 reps
5Abs Crunch (Bodyweight)30 reps
6Farmer's Walk (Weighted)30 min
7Up Down Plank10 reps
#ExerciseSetsReps
1Goblet Squat40 reps
2Lunge (Dumbbell)30 reps
3Step-Up (Weighted)30 reps
4Single Leg Calf Raise (Weighted)30 reps
5Suitcase Carry30 min
6Abs Crunch (Bodyweight)10 reps
7Plank10 min

Weeks 2โ€“18 are in the app

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

Common questions

Yes, 4 day upper/lower 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 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 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 upper/lower 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 18 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 upper/lower 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

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