While I let my shoulder heal, I've been taking a break from upper body workouts and focusing on HIIT and lower body. Last night I had a little extra time so I decided to tackle this one...

https://www.fitnessblender.com/videos/brutal-hiit-workout-bodyweight-only-hiit-workout-to-burn-fat-and-build-endurance

Holy crap. I thought I was going to die multiple times during this routine. By the time I was done, my heart was beating out of my chest. Putting star jumps at the end was laughably cruel too.

So yeah, if you want a beast of a HIIT routine, try this one.