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Heavy Duty
Intermediate–AdvancedFree

Heavy Duty

Bodybuilding program Mike Mentzer style Low volume and very high intensity

elias v
elias v· Mar 2025
1athletes running this program
iOS & Android

Overview

Length
8 weeks
Days / week
3 days
Level
Intermediate, Advanced
Goal
Muscle
Equipment
Full Gym
Session length
30 min
This program is heavy duty program inspired by Mike Mentzer and this is very low volume and very very high volume

Who it's for

Athletes at the Intermediate–Advanced level
Athletes focused on building muscle size
Athletes who can train 3 days per week
Athletes with access to a full gym (barbells, dumbbells, cables, and machines)

Muscle engagement

Front
Back
Lats
16.1%
Upper Back
14.2%
Triceps
11.2%
Biceps
10.5%
Chest
10.5%
Quadriceps
7%
Front Delts
6.3%
Hamstrings
5.6%
Middle Delts
4.9%
Abs
4.2%
Calves
3.5%
Glutes
2.8%
Lower Back
1.4%
Rear Delts
1.1%
Forearms
0.7%
Week 1 Workouts
#ExerciseSetsRepsLoad
1Pec Deck (Machine)110 reps@10
2Incline Bench Press (Smith Machine)210 reps@10
3Seated Row (Cable)18 reps@10
4Lat Pulldown (Close Grip)210 reps@10
5Barbell Row110 reps@10
#ExerciseSetsRepsLoad
1Leg Extension110 reps@10
2Hack Squat110 reps@10
3Leg Curl110 reps@10
4Straight Leg Calf Raise110 reps@10
5Leg Raise (Captain's Chair)115 reps@10
#ExerciseSetsRepsLoad
1Lateral Raise (Dumbbell)110 reps@10
2Reverse Pec Deck18 reps@10
3Bicep Curl (Barbell)18 reps@10
4Underhand Lat Pulldown110 reps@10
5Tricep Pushdown (Cable)110 reps@10
6Overhead Tricep Extension (Cable)18 reps@10

Weeks 2–8 are in the app

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

Common questions

Yes, Heavy Duty is completely free to follow on Boostcamp. Download the app on iOS or Android, find the program, and start your first workout immediately. All 8 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 30 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.

Heavy Duty is structured around 3 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 8 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

Heavy Duty 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