Today I did piyo sweat and I did sweat! It was a sweat from muscles being used not sweat from cardio. It was awesome. There were tons of push-ups, squats, dynamic yoga and Pilates moves. Lots of stretching and strength! 36ish mins that went by quick. I will say I am sore from the past 3 days. My hips, shoulders and knees feel all I have been doing, which is huge for me as I have been doing insanity lately, and haven't been sore from insanity. So this program is definitely working muscles that need to be worked.