40/20 HIIT

40 seconds of work, 20 seconds of rest. Go straight down the list. 4 Rounds - the only rest you get is the 20 seconds between exercises. This one is all about hustle.

• Burpees
• Plank to Pushup
• Bicycle Crunches
• Curtsy Lunges (Speed Skaters for advanced)
• Mtn Climbers
• Jumping Jacks (High knees for advanced)