When people say it feels great when they sweat like no other, feels like you want to puke, your muscles burn like they're about fall off, and you can barely move when your done, does it really feel great physically or is it a mind thing that you feel like you have burned the calories and building muscle to get to your goal? Cause me personally I'm not feeling great. I feel good mentally that I was active. Didnt know if I was missing something