The beauty of HIIT (High Intensity Interval Training) is that it can take any form you want. The hard intervals need to be intense – whether that means power walking or sprinting, high RMP or high resistance, for example – and the recovery sufficient enough to allow for another intense burst, but you can take it outside, on the elliptical, the treadmill, the bike, whatever you enjoy the most!
Here is a workout that will keep your mind entertained by mixing up the work-time and recovery-time every interval. With the 5 minute warm-up and last 2 minute recovery interval, you will finish just under 39 minutes, allowing for another minute recovery and still wrapping up in 40 minutes. It’s hard but goes by quickly!