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Lennys workout
IntermediateFree

Lennys workout

Transform your physique in just 4 weeks with Lenny's workout—sculpt, strengthen, and unleash your inner powerhouse!

Lenny P.
Lenny P.· Dec 2025
iOS & Android

Overview

Length
4 weeks
Days / week
2 days
Level
Intermediate
Goal
Women's, Muscle
Equipment
Full Gym
Session length
60 min
Dive into Lenny's Workout, a comprehensive 4-week program designed for novice lifters looking to build muscle and sculpt their physique. With 8 training days each week, you'll engage in a balanced mix of exercises targeting arms, back, chest, and core, using a full gym setup. Each session lasts about 60 minutes, ensuring you stay focused and energized while progressively challenging your body. Get ready to transform your strength and aesthetics with a structured approach that delivers results!

Who it's for

Intermediate athletes ready for a structured program
Athletes focused on building muscle size
Athletes who can train 2 days per week
Athletes with access to a full gym (barbells, dumbbells, cables, and machines)

Muscle engagement

Front
Back
Triceps
17.2%
Biceps
16.1%
Middle Delts
13.8%
Front Delts
11.5%
Upper Back
10.3%
Lats
10.3%
Chest
8.6%
Abs
5.7%
Cardio
2.9%
Forearms
2.3%
Rear Delts
1.1%
Week 1 Workouts
#ExerciseSetsRepsLoad
1Preacher Curl (EZ Bar)25 reps@6
2Lat Pulldown25 reps@6
3Hammer Curl (Cable)25 reps@6
4Single Arm Iso Row25 reps@6
5Cable Crunch25 reps@9
6Cardio110 min@6.5
#ExerciseSetsRepsLoad
1Single Arm Tricep Extension (Cable)25 reps@6
2Lateral Raise (Cable)25 reps@6
3Incline Bench Press (Smith Machine)25 reps@6
4Shoulder Press (Machine)25 reps@6
5Overhead Tricep Extension (Cable)25 reps@6
6Pec Deck (Machine)10 reps

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, Lennys 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 4 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.

Lennys workout is structured around 2 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.

Lennys 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