Part 1 ( 15 minutes)

Back Squat 5 reps @ 75% of your 1 rep max
Back Squat 3 reps @ 80% of your 1 rep max
Back Squat 5 reps @ 85% of your 1 rep max

Rest 2 minutes between sets.

Part 2 (10 minutes)

Good Mornings 5 sets of 10 reps

Part 3 (12 minutes)

Complete as many rounds as possible in 12 mins of:
10 Toes-to-bars
30 Double Unders
Run, 200 m