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5 Days 20Lbs in 12 weeks
BeginnerFree

5 Days 20Lbs in 12 weeks

5x working days split with the aim of building the most aesthetic physique

Riaz M.
Riaz M.· Mar 2025
iOS & Android

Overview

Length
12 weeks
Days / week
5 days
Level
Beginner
Goal
Muscle
Equipment
Full Gym
Session length
60 min
To help people within the 20lbs in 12 week program do build their ideal physique

Who it's for

Beginners new to structured strength training
Athletes focused on building muscle size
Athletes who can train 5 days per week
Athletes with access to a full gym (barbells, dumbbells, cables, and machines)

Muscle engagement

Front
Back
Middle Delts
11.4%
Hamstrings
10.4%
Front Delts
10%
Biceps
9.2%
Quadriceps
8.8%
Lats
8.4%
Triceps
8.4%
Upper Back
7.6%
Chest
7.2%
Glutes
5.6%
Lower Back
4.8%
Rear Delts
4.3%
Abs
2.4%
Forearms
1.2%
Week 1 Workouts
#ExerciseSetsReps
1Incline Bench Press (Dumbbell)30 reps
2Chest Fly (Dumbbell)30 reps
3Lateral Raise (Dumbbell)60 reps
4Lying Tricep Extension (Barbell)30 reps
5V-Handle Tricep Pushdown (Cable)30 reps
6Rear Delt Fly (Machine)30 reps
#ExerciseSetsReps
1Lat Pulldown30 reps
2Bent Over Row (Barbell)30 reps
3Standing Pullover (Cable)30 reps
4Seated Row (Cable)30 reps
5Bicep Curl (Barbell)30 reps
6Bicep Curl (Machine)30 reps
#ExerciseSetsReps
1Hack Squat30 reps
2Romanian Deadlift (Dumbbell)30 reps
3Leg Extension30 reps
4Seated Hamstring Curl30 reps
5Lateral Raise (Dumbbell)40 reps
#ExerciseSetsReps
1Incline Bench Press (Dumbbell)30 reps
2Lat Pulldown30 reps
3Incline Curl (Dumbbell)30 reps
4V-Handle Tricep Pushdown (Cable)30 reps
5Lateral Raise (Dumbbell)30 reps
#ExerciseSetsReps
1Hack Squat30 reps
2Romanian Deadlift (Dumbbell)30 reps
3Leg Extension30 reps
4Seated Hamstring Curl30 reps
5Lateral Raise (Dumbbell)40 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, 5 Days 20Lbs in 12 weeks 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 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.

5 Days 20Lbs in 12 weeks is structured around 5 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.

5 Days 20Lbs in 12 weeks 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