I tried a new class at the gym last night, Camp24. I thought, "Hey it's only 30 minutes it can't be that hard." Holy effin' crap it was intense. The first 10 minutes were lunges and the rest was a mix of squats and arm exercises with weights. Oh my gosh I can't even describe how much my thighs were burning 5 minutes in. By the end of the class my legs were shaking. Today my toosh and my thighs are so sore. I can't even walk normally. As much as I'm hurting, it was a great class and I plan to make it part of my routine.