Every 10 minutes, for 40 minutes (4 sets) for times:
Row 500 Meters
15 Burpees
20 Walking Lunges with Farmer’s Carry
Run 400 Meters

30-Day Ab Challenge: Day 21

100 – Abmat Sit-Ups
140 – Crunches
62 – Cobras
62 – Leg raises
90 second Plank