What I enjoy most about OTF is that its challenging for all levels of fitness. With the workout changing everyday, you never get bored. You may identify certain exercises that you don't like (pop jacks) but I'm always comfortable and never intimidated by other members. ( no matter how fast their all out ) Recently, the only thing that has been frustrating the last few months is my pod. Although the coaches say "go based on how you feel" I just wished the technology would just work.