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Aaron’s Dec 2025 program
IntermediateFree

Aaron’s Dec 2025 program

Hypertrophy

Aaron O.
Aaron O.· Dec 2025
1athletes running this program
iOS & Android

Overview

Length
12 weeks
Days / week
4 days
Level
Intermediate
Goal
Muscle, Athletics
Equipment
Full Gym
Session length
70 min
High pump

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
Upper Back
16.1%
Quadriceps
10.4%
Lats
9.9%
Front Delts
9.5%
Chest
8.2%
Middle Delts
7.3%
Hamstrings
7.1%
Triceps
6.8%
Rear Delts
6.4%
Glutes
4.9%
Biceps
4.4%
Abs
3.5%
Calves
2.7%
Adductors
1.1%
Lower Back
1.1%
Abductors
0.5%
Week 1 Workouts
#ExerciseSetsReps
1Lat Pulldown312 reps
2Chest Press (Machine)312 reps
3Seated Row (Cable)38 reps
4Chest Fly (Dumbbell)315 reps
5Rear Delt Fly (Cable)20 reps
#ExerciseSetsReps
1Squat (Barbell)35 reps
2Leg Extension315 reps
3Leg Curl315 reps
4Seated Calf Raise315 reps
#ExerciseSetsReps
1Overhead Press (Barbell)38 reps
2Face Pull38 reps
3Lateral Raise (Cable)310 reps
4Pull-Up (Weighted)3153 reps
5Incline Bench Press (Barbell)310 reps
6Dumbbell Row310 reps
#ExerciseSetsReps
1Deadlift (Barbell)35 reps
2Arnold Press212 reps
3Rear Delt Fly (Machine)212 reps
4Leg Press315 reps
5Dragon Flag212 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, Aaron’s Dec 2025 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 70 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.

Aaron’s Dec 2025 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.

Aaron’s Dec 2025 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
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