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Lean muscle fat loss program
Intermediate–AdvancedFree

Lean muscle fat loss program

Transform your body in 16 weeks: burn fat, build lean muscle, and unleash your strongest self with every workout.

· Jan 2026
5athletes running this program
Free on iOS & Android

Overview

Length
16 weeks
Days / week
4 days
Level
Intermediate, Advanced
Goal
Athletics, Women's, Muscle, Strength
Equipment
Full Gym
Session length
80 min
Purpose of the Program – Built Lean. Cut Deep. This program is designed to help individuals achieve visible abdominal definition while building and preserving lean muscle mass. Its purpose is not extreme weight loss or temporary results, but a sustainable transformation that improves body composition, strength, and overall athletic appearance. The program addresses a common mistake in fat-loss training: prioritizing excessive cardio or high-rep ab exercises while neglecting resistance training. Visible abs are not created through isolation alone. They are revealed through a structured approach that combines progressive strength training, metabolic demand, and intelligent core development. This program integrates all three into one cohesive system. The primary goal is body recomposition. By maintaining heavy compound lifts such as squats, presses, rows, and pulls, the body receives a strong signal to retain muscle during a calorie deficit. These movements recruit large muscle groups, increase energy expenditure, and support hormonal responses that favor fat loss without muscle breakdown. This ensures that as body fat decreases, muscle definition becomes sharper rather than flat or depleted. Targeted core training is included to strengthen and thicken the abdominal muscles, improve spinal stability, and enhance posture. Core work focuses on controlled, weighted movements and anti-rotation exercises rather than endless repetitions. This builds functional strength and visible definition once fat levels drop. The program is structured to maximize metabolic efficiency. Strategic exercise sequencing, moderate rest periods, and finishers increase caloric burn while maintaining performance. This approach allows fat loss to occur through resistance training itself, reducing the need for excessive cardio and minimizing recovery issues. Lean muscle development is emphasized over size. Volume is carefully controlled to shape the chest, shoulders, back, legs, and glutes while maintaining balance and joint health. Rear delts, hamstrings, and core stability work are included to support posture, reduce injury risk, and ensure long-term training sustainability. This program is intended to be followed consistently for several weeks without burnout. It promotes discipline, measurable progress, and physical confidence. The outcome is a leaner waist, stronger lifts, improved muscle definition, and a physique that reflects strength and control. Ultimately, the purpose of this program is to create a body that is not only lean and defined, but resilient, functional, and sustainable. It is designed for individuals who want visible abs, lean muscle, and lasting results through intelligent training rather than extremes.

Who it's for

Athletes at the Intermediate–Advanced level
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
Abs
19.3%
Glutes
9.4%
Upper Back
8.6%
Hamstrings
7.8%
Front Delts
7%
Triceps
6.3%
Quadriceps
6.3%
Biceps
5.5%
Chest
4.7%
Middle Delts
4.7%
Lats
4.7%
Rear Delts
3.9%
Abductors
3.9%
Forearms
3.1%
Lower Back
3.1%
Adductors
1.6%
Week 1 Workouts
#ExerciseSetsReps
1Bench Press (Barbell)30 reps
2Incline Bench Press (Dumbbell)30 reps
3Seated Shoulder Press (Dumbbell)30 reps
4Lateral Raise (Dumbbell)30 reps
5Chest Fly (Cable)30 reps
6Tricep Pushdown (Cable)30 reps
7Cable Crunch30 reps
8Plank30 min
#ExerciseSetsReps
1Lat Pulldown30 reps
2Bent Over Row (Barbell)30 reps
3Seated Row (Machine)30 reps
4Face Pull30 reps
5Bicep Curl (Barbell)30 reps
6Hammer Curl (Dumbbell)30 reps
7Hanging Leg Raise30 reps
8Russian Twist (Dumbbell)30 reps
9Mountain Climber30 min
#ExerciseSetsReps
1Squat (Smith Machine)30 reps
2Romanian Deadlift (Barbell)30 reps
3Leg Press (45 Degrees)30 reps
4Walking Lunge (Dumbbell)30 reps
5Hip Thrust (Machine)30 reps
6Hip Abductor (Machine)30 reps
7Hip Abductor (Machine)30 reps
8Ab Wheel30 reps
#ExerciseSetsReps
1Hanging Oblique Knee Raise30 reps
2Wood Chop20 reps
3Wood Chop20 reps
4Back Extension30 reps
5Lateral Raise (Dumbbell)30 reps
6Rear Delt Fly (Cable)30 reps
7Single Arm Farmer Carry30 min
8Single Arm Farmer Carry30 min

Weeks 2–16 are in the app

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

Common questions

Yes, Lean muscle fat loss 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 16 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 80 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.

Lean muscle fat loss 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 16 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

Lean muscle fat loss 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

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