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Interior posterior ( sience based workout)
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Interior posterior ( sience based workout)

Transform your body from the inside out with this 12-week science-backed program designed to unlock your true potential.

Simoozworld
Simoozworld· Mar 2026
5athletes running this program
iOS & Android

Overview

Length
12 weeks
Days / week
4 days
Level
Beginner, Intermediate, Advanced
Goal
Muscle
Equipment
Full Gym
Session length
60 min
**Interior Posterior (Science-Based Workout)** is a comprehensive 12-week program designed to enhance your strength and muscle development through targeted exercises. With a commitment of just 24 days over the duration, this program focuses on key muscle groups using machines and barbells to maximize effectiveness. Each session incorporates high-intensity workouts, ensuring you push your limits while maintaining proper form. Get ready to transform your physique and elevate your training with scientifically-backed methods that deliver results!

Who it's for

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

Muscle engagement

Front
Back
Triceps
12.6%
Front Delts
10.7%
Upper Back
10.7%
Biceps
10.2%
Chest
9.8%
Lats
8.7%
Hamstrings
7.8%
Glutes
6.8%
Quadriceps
4.8%
Rear Delts
3.9%
Lower Back
2.9%
Abs
2.9%
Forearms
2.9%
Middle Delts
2.9%
Adductors
1.9%
Abductors
0.5%
Week 1 Workouts
#ExerciseSetsRepsLoad
1Stiff Leg Deadlift26–8 reps@8–10
2Leg Curl16–8 reps@8–10
3Hip Thrust (Barbell)16–8 reps@8–10
4Wide Grip Lat Pulldown26–8 reps@8–10
5Single Arm Iso Row16–8 reps@8–10
6Seated Wide-Grip Row (Cable)26–8 reps@8–10
7Rear Delt Fly (Machine)26–8 reps@8–10
8Preacher Curl (Dumbbell)26–8 reps@8–10
9Hammer Curl (Dumbbell)16–8 reps@8–10
#ExerciseSetsRepsLoad
1Leg Extension26–8 reps@8–10
2Leg Press16–8 reps@9
3Hip Adductor (Machine)16–8 reps@10
4Chest Fly (Machine)26–8 reps@8–10
5Incline Chest Press (Machine)26–8 reps@8–10
6Shoulder Press (Machine)16–6 reps@8–10
7Single Arm Triceps Cuffed Pushdown26–8 reps@8–10
8Close Grip Bench Press (Smith Machine)16–8 reps@8–10
#ExerciseSetsRepsLoad
1Single Arm Iso Row26–8 reps@8–10
2Seated Wide-Grip Row (Cable)26–8 reps@8–10
3Stiff Leg Deadlift26–8 reps@8–10
4Hip Thrust (Barbell)16–8 reps@8–10
5Preacher Curl (Dumbbell)26–8 reps@8–10
6Leg Curl16–8 reps@8–10
7Rear Delt Fly (Machine)26–8 reps@8–10
8Hammer Curl (Dumbbell)16–8 reps@8–10
#ExerciseSetsRepsLoad
1Incline Chest Press (Machine)26–8 reps@8–10
2Chest Fly (Machine)36–8 reps@8–10
3Hip Adductor (Machine)16–8 reps@10
4Shoulder Press (Machine)26–6 reps@8–10
5Single Arm Triceps Cuffed Pushdown26–8 reps@8–10
6Leg Extension26–8 reps@8–10
7Close Grip Bench Press (Smith Machine)16–8 reps@8–10

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, Interior posterior ( sience based workout) 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.

Interior posterior ( sience based workout) 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.

Interior posterior ( sience based workout) 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