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The Spring-Loaded Plumber
Intermediate–AdvancedFree

The Spring-Loaded Plumber

Industrial-strength powerbuilding with old-school brutality.

· Mar 2026
iOS & Android

Overview

Length
12 weeks
Days / week
4 days
Level
Intermediate, Advanced
Goal
Muscle, Strength, Athletics
Equipment
Full Gym
Session length
100 min
A 12-week blue-collar powerbuilding program built around heavy compounds, structural strength and high training density. This program combines barbell strength work, hypertrophy accessories, isometric holds, loaded carries and core training to develop a physique that is not only muscular, but durable and difficult to break. Designed for lifters who want more than aesthetics: strength, resilience, work capacity and long-term progression. No fluff, no wasted movement — only exercises with purpose. * some of the exercises are in a wrong place, it is pointed in the exercise notes * Use double progression. For compound lifts, increase reps within your target range first, then add weight once all sets are completed cleanly. For isolation work, prioritize control and full range before increasing load. For isometric holds and carries, increase duration first, then load. Accesories, isolations try to put up to 12 reps

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
Triceps
10.7%
Front Delts
10.4%
Abs
10.4%
Chest
8.1%
Upper Back
7.9%
Biceps
7.8%
Hamstrings
7.8%
Quadriceps
7%
Glutes
6.8%
Middle Delts
5.9%
Lats
4.4%
Forearms
4.4%
Rear Delts
3%
Lower Back
2.8%
Abductors
1.7%
Adductors
0.9%
Week 1 Workouts
#ExerciseSetsReps
1Bench Press (Barbell)50 reps
2Chest Fly (Dumbbell)40 reps
3Single Arm Row (Dumbbell)40 reps
4Lat Pulldown40 reps
5Military Press (Barbell)40 reps
6Lateral Raise (Cable)40 reps
Superset
7AJM Press (Smith Machine)30 reps
7BHammer Curl (Dumbbell)40 reps
8Abs Crunch (Bodyweight)30 min
9Russian Twist (Dumbbell)30 min
10Ab Wheel30 reps
#ExerciseSetsReps
1Squat (Barbell)50 reps
2Leg Press315 reps
Superset
3ALeg Curl40 reps
3BLeg Extension40 reps
4Hip Abductor (Machine)30 reps
Superset
5ABicep Curl (Barbell)40 reps
5BTricep Extension (Barbell)40 reps
Superset
6APlank30 min
6BSide Plank30 min
#ExerciseSetsReps
1Incline Bench Press (Dumbbell)40 reps
2Chest Fly (Cable)40 reps
3Deadlift (Barbell)30 reps
4Lateral Raise (Dumbbell)40 reps
5Face Pull40 reps
Superset
6ATricep Pushdown (Cable)40 reps
6BBicep Curl (Dumbbell)40 reps
7Sit Up30 reps
8Russian Twist30 reps
9Seated Row (Cable)40 reps
#ExerciseSetsRepsLoad
1Front Squat (Barbell)40 reps
2Bench Press (Dumbbell)20 reps@7
3Isometric Dumbbel Chest Hold30.3–0.5 min
4Farmer's Walk (Weighted)30 min
5Lateral Raise (Cable)40 reps
6Incline Curl (Dumbbell)30 reps
7Ab Wheel30 min
8Hyperextension40 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, The Spring-Loaded Plumber 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 100 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.

The Spring-Loaded Plumber 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.

The Spring-Loaded Plumber 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