30 minutes HIIT treadmill Workout

My personal philosophy with interval training and cardio exercise is that’s it’s all about intensity. With that said, I really enjoy the following interval training workout, which is short, sweet, and tough:

30 seconds sprinting (I do 12-14mph – but be careful)
30 seconds rest (resting on the treadmill, hop off)
Complete 5 rounds

This workout takes literally 5 minutes. Be sure to properly warm up with some foam rolling/dynamic stretching. Also, be careful when running, or sprinting on a treadmill, because there are a lot of YouTube videos of people falling off of treadmills, so it does happen.

To make the workout more difficult, you can add additional rounds. I wouldn’t do more than 10 rounds total. If you can do more, you didn’t push yourself hard enough. A slight variation, which I also like, is to increase the incline to 10 (out of 15) and sprint for 30 seconds and rest 60 seconds for 5-7 rounds. To make this workout easier, you can increase the rest period to 60 seconds, or more, whatever works for your fitness level.