HIIT CARDIO-Pick Any Cardio Machine
Start Off At A Lower Level (6 0r 12) Do For 30 Seconds
Increase Level By 1 For 1 Minute
Increase Level Again For 1 Minute
Increase Level Again For 1 Minute
Return To Lower Level For 1 Minute
Repeat Until You Reach 10, 15 Or 20 Minutes