How Long Should My HIIT Intervals Be?

Are you new to HIIT, and wondering “How long should my HIIT intervals be?”     It’s a tough question for beginners. And it’s one I’ve been thinking about, since I recently wrapped up filming Transform:20 with Shaun T!! You could call Transform:20 HIIT…Like you can probably guess, it’s 20 minutes a day, 6x a […]