Velocity decrease by one

As many rounds as you can do until time ran out of:

12 burpees
11 squat to overhead press
10 box jumps
9 squat jump single action
8 supine row
7 pullups
6 glute hammies
5 ab rollers
4 dips
3 farmers walks with 90#
2 suicides (liners)
1 minute rest