When the clock starts perform...
As many rounds and reps possible in 12 minutes of:
400 Meter Run
50 Double Unders
30 Alternating V-Ups
Breathe exclusively through your nose throughout this entire first portion. If you find that your mouth drops open, you're going too hard. Slow your pace and resume breathing only through your nose.
When the running clock reaches 12:00, perform the following...
Complete as many rounds and reps possible in 12 minutes of:
400 Meter Run
50 Double Unders
20 Dumbbell Box Step Ups or 30 Air Squats
When the running clock reaches 24:00, perform the following...
Complete for time:
400 Meter Run
50 Double Unders
30 Alternating V-Ups
400 Meter Run
50 Double Unders
20 Dumbbell Push Press or Back Pack Strict Press
TIME CAP: 10 Minutes