4 Days ArmHypertrophy
Unleash your arm potential in just 12 weeks—transform strength into sculpted definition with 4 days of dedicated hypertrophy training.
Overview
Who it's for
Muscle engagement
| # | Exercise | Sets | Reps | Load |
|---|---|---|---|---|
| 1 | Squat (Barbell) | 4 | 8 reps | @8 |
| 2 | Romanian Deadlift (Dumbbell) | 3 | 10 reps | @8 |
| 3 | Walking Lunge (Dumbbell) | 3 | 12 reps | @8 |
| 4 | Leg Extension | 3 | 15 reps | @8 |
| 5 | Lying Leg Curl | 3 | 15 reps | @8 |
| 6 | Calf Raise (Leg Press) | 4 | 20 reps | @8 |
| # | Exercise | Sets | Reps | Load |
|---|---|---|---|---|
| 1 | Bench Press (Barbell) | 4 | 8 reps | @9 |
| 2 | Pull-Up (Weighted) | 4 | 8 reps | @8 |
| 3 | Seated Shoulder Press (Dumbbell) | 3 | 10 reps | @8 |
| 4 | Barbell Row | 3 | 10 reps | @8 |
| 5 | Overhead Tricep Extension (Dumbbell) | 3 | 12 reps | @8 |
| 6 | Bicep Curl (Cable) | 3 | 12 reps | @8 |
| # | Exercise | Sets | Reps | Load |
|---|---|---|---|---|
| 1 | Incline Bench Press (Smith Machine) | 3 | 10 reps | @8 |
| 2 | Wide Grip Lat Pulldown | 3 | 12 reps | @8 |
| 3 | Dumbbell Row | 3 | 10 reps | @8 |
| 4 | Lateral Raise (Cable) | 3 | 15 reps | @8 |
| 5 | Rear Delt Fly (Cable) | 3 | 15 reps | @8 |
| 6 | Tricep Pushdown (Cable) | 3 | 12 reps | @8 |
| 7 | Hammer Curl | 3 | 12 reps | @8 |
| # | Exercise | Sets | Reps | Load |
|---|---|---|---|---|
| 1 | Bench Press (Close Grip) | 2 | 10 reps | @8 |
| 2 | Incline Curl (Dumbbell) | 3 | 12 reps | @8 |
| 3 | Reverse Bicep Curl (EZ Bar) | 3 | 15 reps | @8 |
| 4 | Overhead Tricep Extension (Dumbbell) | 2 | 12 reps | @8 |
| 5 | Hammer Curl | 2 | 12 reps | @8 |
| 6 | Wrist Curls | 2 | 20 reps | @8 |
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, 4 Days ArmHypertrophy 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 100 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 Days ArmHypertrophy 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.
4 Days ArmHypertrophy 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
