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U+L 4X
All LevelsFree

U+L 4X

baseado em low volume

vitor arante
vitor arante· Apr 2026
Free on iOS & Android

Overview

Length
6 weeks
Days / week
4 days
Level
Novice, Intermediate, Advanced
Goal
Muscle, Strength
Equipment
Full Gym
Session length
60 min
força

Who it's for

Athletes of all experience levels
Athletes focused on gaining both size and strength
Athletes who can train 4 days per week
Athletes with access to a full gym (barbells, dumbbells, cables, and machines)

Muscle engagement

Front
Back
Hamstrings
12.3%
Quadriceps
11.3%
Upper Back
10.3%
Glutes
9.2%
Lats
8.2%
Chest
8.2%
Front Delts
7.7%
Triceps
7.2%
Biceps
6.2%
Calves
4.1%
Abs
3.6%
Middle Delts
3.1%
Lower Back
3.1%
Adductors
2.1%
Rear Delts
1.5%
Forearms
1%
Abductors
1%
Week 1 Workouts
#ExerciseSetsReps
1T-Bar Row15–9 reps
15–9 reps
2Lat Pulldown (Close Grip)15–9 reps
15–9 reps
3Chest Press (Machine)15–9 reps
15–9 reps
4Pec Deck (Machine)15–9 reps
15–9 reps
5Lateral Raise (Machine)110–12 reps
6Preacher Curl (Machine)110–12 reps
7Single Arm Overhead Tricep Extension15–9 reps
15–9 reps
#ExerciseSetsReps
1Leg Curl15–9 reps
15–9 reps
2Hack Squat15–9 reps
15–9 reps
3Hip Adductor (Machine)15–9 reps
15–9 reps
4Hip Thrust (Machine)15–9 reps
15–9 reps
5Leg Extension15–9 reps
15–9 reps
6Standing Calf Raise15–9 reps
15–9 reps
#ExerciseSetsReps
1Incline Chest Press (Machine)15–9 reps
15–9 reps
2Lat Pulldown15–9 reps
15–9 reps
3Pec Deck (Machine)15–9 reps
15–9 reps
4Seated Row (Cable)15–9 reps
15–9 reps
5Kelso Shrug (Chest Supported)15–9 reps
15–9 reps
6Lateral Raise (Dumbbell)15–9 reps
15–9 reps
7Hammer Curl (Dumbbell)110–12 reps
8Tricep Pushdown (Cable)110–12 reps
#ExerciseSetsReps
1Romanian Deadlift (Dumbbell)15–9 reps
15–9 reps
2Leg Press (45 Degrees)15–9 reps
15–9 reps
3Leg Curl15–9 reps
15–9 reps
4Split Squat (Smith Machine)15–9 reps
5Leg Extension15–9 reps
15–9 reps
6Seated Calf Raise15–9 reps
15–9 reps

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, U+L 4X 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 60 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.

U+L 4X 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.

U+L 4X 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
Auto-progressionWeights and targets update automatically based on how you perform.
Training logLog every set and track your weights automatically each session.
Progress trackingSee your strength gains over weeks and months with built-in analytics.
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Free on iOS & Android