Today’s HIIT workout is guaranteed to have your arms burning and your heart thumping. For the planks, try to go up on your hands, but drop down to your elbows if need be. Be sure to go all out on the high knees. It’s only 20 seconds, you can do it!

PERFORM PER ROUND:

• 20 sec – Push ups
• 20 sec – Planks
• 20 sec – High Knees (go all out)

Rest :30 seconds between rounds

NUMBER OF ROUNDS:

• Beginner – 5
• Intermediate – 7
• Advanced – 9