1 Minute of each:
Slam ball overhead press, max reps
Straight leg situps, max reps
Assault bike, max calories

Rest 3 minutes, repeat.
Rest 3 minutes, repeat.

Notes: Used slam ball instead of dumbbell push press since the 50s were a little heavy to use for the whole minute. Pushed hard on the bike -- average watts at around 440W which worked out to about 18 calories each minute.