Fitness/Performance Workout

A.
Back squat or Box Squat 8-6-4-4-4-3-3-3 (50% to 80%)
Don't go too heavy!

B.
Every 3 minutes, for 3 rounds:
Weighted box step ups x 20 (use bar)

C.
Four sets of:
500m ski
20 sit ups
Rest 1 min