Tabata Hell (for each exercise, 8 rounds of 20s work 10s rest):
Dumbell swings (15#) [12]
Belly-backs [3.5]
Step-ups (2x15# DB) [14]
Crunches [2]
Sumo Dead Lift High Pull (30lb BB) [12]

Belly-backs not taxing enough, movement is too complex and slow for the given interval. More of a chipper exercise. Burpees would have been better.
Crunches were terrible due to muscular failure; first set was good at 23 reps, but was halved by the next and so on. Calf and hip cramps halfway through. Could sub with V-ups or leg-lifts? Need more core work.