I assume this is from the recent NYT article about the intense seven minute workout. The order of the exercises is important because it shifts from upper to lower body. You're supposed to do each one as intense as you can and rest for 10 seconds between. The research suggest this type of high intensity interval workout has the same effects as long moderate intensity workouts...very cool and thanks.

My son started doing this and was fumbling with timing on his watch. I'll have him use this now.