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Mentzer Heavy Duty II Ideal Program
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Mentzer Heavy Duty II Ideal Program

3-5 days rest between workouts. Start off with 3 days rest. If Day 1 is Monday, Day 2 is Thursday. When you plateau, add a rest day.

Silver P.
Silver P.· Aug 2026
2athletes running this program
iOS & Android

Overview

Length
8 weeks
Days / week
4 days
Level
Advanced
Goal
Strength, Muscle
Equipment
Full Gym
Session length
40 min
Unlock your strength potential with the Mentzer Heavy Duty II Ideal Routine, a focused program designed for serious lifters looking to maximize muscle growth in minimal time. This split routine emphasizes high-intensity training, allowing for optimal recovery while targeting major muscle groups effectively. Commit to high intensity workouts that blend compound lifts with isolation exercises, ensuring you build strength and size efficiently. Perfect for those ready to push their limits and see results fast!

Who it's for

Advanced athletes looking to push past plateaus
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
Quadriceps
14.3%
Chest
10%
Front Delts
8.6%
Triceps
8.6%
Glutes
8.6%
Hamstrings
8.6%
Abs
8.6%
Lats
5.7%
Calves
5.7%
Upper Back
4.3%
Biceps
4.3%
Rear Delts
4.3%
Middle Delts
2.9%
Lower Back
1.4%
Abductors
1.4%
Forearms
1.4%
Adductors
1.4%
Week 1 Workouts
#ExerciseSetsRepsIntensity
Superset
1APec Deck (Machine)16–10 reps@10
1BIncline Bench Press (Barbell)11–3 reps@10
Superset
2APullover (Machine)16–10 reps@10
2BLat Pulldown (Close Grip)16–10 reps@10
3Deadlift (Barbell)15–8 reps@10
#ExerciseSetsRepsIntensity
Superset
1ALeg Extension18–15 reps@10
1BLeg Press18–15 reps@10
2Standing Calf Raise112–20 reps@10
3Decline Sit Up (Weighted)115–25 reps@10
#ExerciseSetsRepsIntensity
1Lateral Raise (Dumbbell)16–10 reps@10
2Rear Delt Fly (Dumbbell)16–10 reps@10
3Bicep Curl (Barbell)16–10 reps@10
Superset
4ATricep Pushdown (Cable)16–10 reps@10
4BDip (Bodyweight)13–5 reps@10
#ExerciseSetsRepsIntensity
Superset
1ALeg Extension16–10 reps@10
1BSquat (Barbell)16–10 reps@10
2Standing Calf Raise112–20 reps@10
3Abs Crunch (Weighted)115–25 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, Mentzer Heavy Duty II Ideal Program 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 40 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.

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

Mentzer Heavy Duty II Ideal Program 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
11,000+ 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.
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