Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tough as Heck . . .

Any misconception I had about yoga being for lightweights where quickly dismissed the first time I popped this DVD in and gave it a go. Not long after the warm up, I was drenched in sweat and muscle I never knew I had were on fire! It's tough as heck but easy to follow thanks to great instruction from Bob Harper. It's a great supplement to my weekly workout routine.