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Just Rambo Upper Lower
IntermediateFree

Just Rambo Upper Lower

A 4-day upper/lower bulking program for novice-to-intermediate lifters, built around heavy compounds, smart accessory work, and steady weekly progression.

JustRamboIt
JustRamboIt· Jan 2026
Free on iOS & Android

Overview

Length
12 weeks
Days / week
4 days
Level
Intermediate
Goal
Muscle
Equipment
Garage Gym
Session length
70 min
Rambo Upper Lower is a 12-week upper/lower bulking program built around the core ideas of Lyle McDonald’s Generic Bulking Routine: get stronger on the big lifts, accumulate enough quality weekly volume to grow, and progress in a way you can sustain. The program is designed to build muscle and strength together by combining two main training drivers: 1) Heavy, high-tension compound training Each session prioritises the “money” lifts first (squat/hinge, presses, rows/pulls). These are trained in moderate rep ranges with solid rest periods so you can use challenging loads, repeat clean reps, and make steady performance gains over time. This is the backbone for adding size and strength at the same time. 2) Targeted hypertrophy work that supports growth without crushing recovery After the main lifts, the program adds secondary lifts and accessories in slightly higher rep ranges. The goal is to build muscle with enough weekly work for each muscle group while controlling fatigue. You’re not trying to annihilate yourself every workout—you’re trying to train hard, recover, and come back stronger. Why this structure works for bulking Bulking succeeds when you can push progressive overload while staying recoverable. Upper/lower is ideal for that because it trains each muscle group twice per week, which gives you frequent practice on the compounds and regular growth stimulus without needing marathon sessions. If you run this properly, you should finish the block with: • stronger performance on the main lifts (more weight, more reps, or cleaner sets) • visible improvements in key muscle groups from consistent weekly volume • a framework you can repeat and run again for even more growth This program is meant to be repeatable and “boringly effective.” You’ll get plenty of work, but the plan is organised so you can actually keep progressing instead of stalling from constantly training at your limit.

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 who train in a garage gym (barbell, rack, and basic free weights)

Muscle engagement

Front
Back
Glutes
11%
Hamstrings
11%
Quadriceps
9.7%
Upper Back
8.6%
Triceps
7.5%
Front Delts
7%
Calves
7%
Chest
6.2%
Lats
6.2%
Biceps
5.7%
Lower Back
5.3%
Abs
5.3%
Rear Delts
4.4%
Middle Delts
4.2%
Abductors
0.9%
Week 1 Workouts
#ExerciseSetsRepsLoad
1Bench Press (Barbell)46–8 reps@8–10
2Seated Wide-Grip Row (Cable)46–8 reps@8–10
3Incline Bench Press (Dumbbell)310–12 reps@8–10
4Lat Pulldown (Close Grip)310–12 reps@8–10
5One Arm Lateral Raise (Cable)48–10 reps@8–10
6Rear Delt Fly (Dumbbell)48–10 reps@8–10
7Alternating Dumbbell Curl310–12 reps@8–10
8Overhead Tricep Extension (Cable)310–12 reps@8–10
#ExerciseSetsRepsLoad
1Hack Squat46–8 reps@8–10
2Romanian Deadlift (Barbell)46–8 reps@8–10
3Leg Extension310–12 reps@8–10
4Leg Curl310–12 reps@8–10
5Standing Smith Machine Calf Raise48–10 reps@8–10
6Seated Smith Machine Calf raise48–10 reps@8–10
7Sit Up310–15 reps@10
8Hyperextension 45 Degree38–10 reps@8–10
#ExerciseSetsRepsLoad
1Incline Bench Press (Barbell)46–8 reps@8–10
2Chest Supported Row (Dumbbell)46–8 reps@8–10
3Seated Cable Flye310–12 reps@8–10
4Lat Pulldown (Single Arm)310–12 reps@8–10
5Lying Cuffed Side Lateral Raise48–10 reps@8–10
6Rear Delt Fly (Cable)48–10 reps@8–10
7Straight Bar Cable Curl310–12 reps@8–10
8Tricep Rope Push Down (Cable)310–12 reps@8–10
#ExerciseSetsRepsLoad
1Leg Press (45 Degrees)46–8 reps@8–10
2Romanian Deadlift (Dumbbell)46–8 reps@8–10
3Bulgarian Split Squat (Dumbbell)310–12 reps@8–10
4Lying Cable Leg Curl310–12 reps@8–10
5Toe Press On Leg Press48–10 reps@8–10
6Seated Smith Machine Calf raise48–10 reps@8–10
7Sit Up310–15 reps@10
8Hyperextension 45 Degree38–10 reps@10

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, Just Rambo Upper Lower 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 garage 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 70 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.

Just Rambo Upper Lower 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.

Just Rambo Upper Lower 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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