Reviews

I have just been running the peak phase with great strength gains even if I'm at a caloric maintenance level. Also helped me drop body fat.

Awesome program, also includes alt exercises if needed

If you like to do the same exercises over and over, this is the program for you. It’s a little confusing on how the program wants you to increase your weights, but you definitely can make gains over time. When the rep counts high, it can take a long time to get through your workout.

I’m a detrained power lifter getting back into the game and this program has been awesome, my strength has exploded in the first few week already. Highly recommend

Great so far. I've not finished yet, so no 5 star until I can say I've been through it all. Base phase is tough going. Would recommend taking a little off your max weights when starting.

It’s is very structured and well designed program . For some one who is at intermediate level this program helps extremely well.

At first sight, it looks weird to start as easy but stick to the program don't over do and the results are amazing. Before starting bullmastiff Squat PR was plateaus at 298 lbs for more than 15 years and now 386lbs.

I’ve run this program twice now. Got back into lifting weights in 2022 and ran this program Jul - Nov 2024. My 1 rpm prior to the program were a 365 squat, a 550 deadlift, and a 275 bench. After 18 weeks I performed a 415 squat, a 600 deadlift, and a 295 bench. In 2025 I stopped lifting heavy and focused on losing 30 lbs while doing less weight more reps in the gym. In 2026 I ran the program again from Mar - Jul. I put the 30 lbs back on and was able to get back to previous maxes after about 2 years and then hit new PRs. After 18 weeks my 1 rpm was a 305 bench, a 445 squat, a 610 deadlift which I felt I had more in the tank for 615 or 620, and this time I attempted my overhead press max which was 215. All weights lifted above are in Lbs. This program may not be for everyone but it sure works for me. The only changes I made were replacing Tricep extensions on a cable machine for rolling Tricep extensions with dumbbells and cutting out doing abs. I felt I got enough core work doing deadlifts and RDL’s. Beginning the program is always horrible especially on leg days. It was normal for me to feel like shit and power through while trying not to throw up for the first 3 weeks while your body adapts to the volume. I tried push the weight on the accessories and never go lighter just because it was RPE 6 or 7 and I was supposed to have 3-4 reps left in the tank. Last thing I changed my second time running the program was increasing the 1 rpm weight every 3 weeks by 10 lbs until the end. My first time I only changed the 1 rpm at the start of the peak phase.

6 weeks in and I really enjoy this program so far

I was doing the usuals. 5x5 and 531. Was stuck on my ohp and progressed slowly overall. I feel confident that Bullmastiff will bust plateaus. My on paper 1rms across the board have jumped big time. I'm almost there. Feeling Strong.