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3-Day 5/3/1 FSL
IntermediateFree

3-Day 5/3/1 FSL

Unlock your strength in just 3 days a week—build power, endurance, and athleticism with the 5/3/1 FSL method in your garage gym.

Wyatt J.
Wyatt J.· Apr 2026
1athletes running this program
iOS & Android

Overview

Length
4 weeks
Days / week
3 days
Level
Intermediate
Goal
Athletics, Muscle, Strength
Equipment
Garage Gym
Session length
60 min
Unlock your strength potential with the 3-Day 5/3/1 FSL program, designed for those ready to elevate their lifting game. Over the course of 4 weeks, you'll engage in a focused regimen that combines foundational lifts with accessory work, ensuring balanced development in muscle and strength. Each session, lasting about 60 minutes, integrates barbell movements and machine exercises, tailored for intermediate lifters looking to push their limits. Equip your garage gym and get ready to transform your physique and performance!

Who it's for

Intermediate athletes ready for a structured program
Athletes focused on gaining both size and strength
Athletes who can train 3 days per week
Athletes who train in a garage gym (barbell, rack, and basic free weights)

Muscle engagement

Front
Back
Quadriceps
12.3%
Hamstrings
12.3%
Glutes
11.1%
Triceps
9.9%
Abs
7.4%
Upper Back
7.4%
Biceps
7.4%
Chest
7.4%
Front Delts
7.4%
Lats
4.9%
Lower Back
4.9%
Adductors
2.5%
Forearms
2.5%
Rear Delts
2.5%
Week 1 Workouts
#ExerciseSetsRepsLoad
1Squat (Barbell)15 reps65%
15 reps75%
15 reps85%
2Squat (Barbell)35 reps65%
3Lat Pulldown (Neutral Grip)310 reps@6
Superset
4ALeg Extension312 reps@6
4BLying Leg Curl312 reps@6
5Bicep Curl (EZ Bar)310 reps@6
#ExerciseSetsRepsLoad
1Bench Press (Barbell)15 reps65%
15 reps75%
15 reps85%
2Bench Press (Barbell)35 reps65%
3Seated Row (Cable)310 reps@6
4Tricep Pushdown (Cable)312 reps@6
Superset
5AShrug (Trap Bar)312 reps@6
5BBand Pull Apart312 reps@6
#ExerciseSetsRepsLoad
1Deadlift (Barbell)15 reps65%
15 reps75%
15 reps85%
2Deadlift (Barbell)35 reps65%
3Landmine Press38 reps@6
4Back Extension (Weighted)312 reps@6
Superset
5AHammer Curl (Cable)310 reps@6
5BAb Wheel3AMRAP@10

Weeks 2–4 are in the app

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

Common questions

Yes, 3-Day 5/3/1 FSL is completely free to follow on Boostcamp. Download the app on iOS or Android, find the program, and start your first workout immediately. All 4 weeks are fully unlocked.

This program is built around a garage 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.

3-Day 5/3/1 FSL 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 4 weeks. The structure is designed so that each week builds on the last, with weights, volume, or intensity progressively increasing as you go.

3-Day 5/3/1 FSL 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