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Flex and Fire Program
IntermediateFree

Flex and Fire Program

Reclaim Your Strength. Rebuild Your Confidence.

Michael  F.
Michael F.· Jul 2025
6athletes running this program
iOS & Android

Overview

Length
12 weeks
Days / week
4 days
Level
Intermediate
Goal
Muscle, Women's
Equipment
Full Gym
Session length
60 min
This 4-day training split is built for women who want more than just “toned arms” or endless cardio. This program is designed to: Build real strength without bulking Shape glutes, legs, shoulders, and arms for a confident, feminine physique Improve posture, core stability, and joint health Rebuild energy and metabolism through muscle, not starvation Fit into a busy schedule with smart, focused workouts Each workout blends machine and free weight movements for joint-friendly progress, while still building the foundation for long-term muscle growth and metabolic health. Glutes and posture are prioritized. Consistency is everything!

Who it's for

Intermediate athletes ready for a structured program
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
Quadriceps
10.3%
Upper Back
9.5%
Hamstrings
9.5%
Glutes
9.5%
Abs
7.8%
Front Delts
6.9%
Triceps
6.9%
Adductors
6.9%
Chest
5.2%
Rear Delts
5.2%
Lats
5.2%
Middle Delts
4.3%
Biceps
4.3%
Calves
3.4%
Lower Back
2.6%
Abductors
1.7%
Forearms
0.9%
Week 1 Workouts
#ExerciseSetsReps
1Incline Chest Press (Machine)38 reps
2Lateral Raise (Dumbbell)38 reps
3Shoulder Press (Machine)38 reps
Superset
4APec Deck (Machine)38 reps
4BReverse Pec Deck38 reps
5Cable Crunch312 reps
6Overhead Tricep Extension (Cable)38 reps
7Push Up30 reps
#ExerciseSetsReps
1Seated Hamstring Curl310 reps
2Romanian Deadlift (Barbell)38 reps
3Hip Thrust (Barbell)38 reps
Superset
4AHip Adductor (Machine)38 reps
4BHip Abductor (Machine)38 reps
5Reverse Lunge (Dumbbell)310 reps
6Seated Calf Raise312 reps
#ExerciseSetsReps
1Face Pull38 reps
2Dumbbell Row38 reps
3Lat Pulldown38 reps
4Reverse Pec Deck38 reps
5Abs Crunch (Machine)310 reps
6Bicep Curl (Cable)38 reps
7Seated Wide-Grip Row (Cable)38 reps
#ExerciseSetsReps
1Leg Extension38 reps
2Hack Squat38 reps
3Bulgarian Split Squat (Dumbbell)38 reps
4Seated Calf Raise312 reps
5Lunge (Bodyweight)312 reps
Superset
6AHip Adductor (Machine)38 reps
6BHip Adductor (Machine)38 reps
7Cable Crunch38 reps

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, Flex and Fire 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 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.

Flex and Fire 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 12 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

Flex and Fire 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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