30/30 CALISTHENICS CIRCUIT
Complete 5 rounds of the following circuit in twenty minutes.
30/30 = 30 seconds work, 30 seconds rest
Advanced:
- 30/30 Pull-ups
 - 30/30 Sit-ups
 - 30/30 Push-ups
 - 30/30 Squats
 
Intermediate:
- 30/30 Partial, Assisted, or Jumping Pull-ups
 - 30/30 Sit-ups or Crunches
 - 30/30 Push-ups (go to your knees if necessary)
 - 30/30 Squats
 
Basic:
- 30/30 Body Rows
 - 30/30 Crunches
 - 30/30 Knee Push-ups
 - 30/30 Half- Squats