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Random Upper/Lower Split
Beginner–IntermediateFree

Random Upper/Lower Split

I used this for idk how long but it works

AJ Cordero
AJ Cordero· Jun 2025
2athletes running this program
iOS & Android

Overview

Length
6 weeks
Days / week
4 days
Level
Intermediate, Beginner
Goal
Muscle
Equipment
Full Gym
Session length
90 min
Properly warm-up body before working out Warm-up sets: do them without rest in between, then rest before the first working set. Rest time: 2-3 Minutes between sets Drink water cus important If you want to use a different machine go ahead (ex. smith to barbell back squat instead) I am not liable for anything type shit

Who it's for

Beginners new to structured strength training
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
12.9%
Front Delts
11.1%
Middle Delts
8.8%
Upper Back
8.3%
Biceps
8.3%
Quadriceps
8.3%
Hamstrings
8.3%
Chest
7.4%
Lats
5.5%
Rear Delts
5.5%
Calves
4.6%
Glutes
3.7%
Adductors
2.8%
Forearms
2.8%
Abs
0.9%
Abductors
0.9%
Week 1 Workouts
#ExerciseSetsRepsLoad
1Incline Bench Press (Dumbbell)16–8 reps@8
110–12 reps@8
2Chest Press (Machine)16–8 reps@8
110–12 reps@8
3Pec Deck (Machine)26–10 reps@8
4Lat Pulldown26–10 reps@8
5Lateral Raise (Dumbbell)310 reps@8
6Tricep Pushdown (Cable)36–10 reps@8
#ExerciseSetsRepsLoad
1Squat (Smith Machine)16–8 reps@8
110–15 reps@8
2Leg Extension38–10 reps@8
3Seated Hamstring Curl38–10 reps@8
4Hip Adductor (Machine)210–12 reps@8
5Standing Calf Raise210–12 reps@8
6Bicep Curl (Cable)36–10 reps@8
#ExerciseSetsRepsLoad
1Chest Supported Row (Machine)25–10 reps@8
2Lat Pulldown25–10 reps@8
3Shoulder Press (Machine)26–8 reps@8
4Bench Press (Dumbbell)28–10 reps@8
5Reverse Pec Deck36–10 reps@8
6Lateral Raise (Dumbbell)310 reps@8
#ExerciseSetsRepsLoad
1Seated Hamstring Curl28–10 reps@8
2Leg Press26–10 reps@8
3Leg Extension28–10 reps@8
4Standing Calf Raise310–12 reps@8
5Overhead Tricep Extension (Cable)36–10 reps@8
6Bicep Curl (Machine)36–10 reps@8

Weeks 2–6 are in the app

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

Common questions

Yes, Random 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 6 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.

Random 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 6 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

Random 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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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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