I think the information on the contraindicated moves was great......i go to some free classes at the military base, and there are a lot of macho guys in the class. There are 3 different instructors. One is a real "outdoor" cyclist, and I really like his class. But one of the other guys is always doing that hopping up and down stuff, and doing push ups on the bike, and doing that "hovering" thing. I am by nature a very disobedient person, so i was sort of modifying things by not turning the # of "turns" that the instructor said to, etc. Maybe that is why I sit in the back of the room. Anyhow, I was wondering for the last few weeks if some of this stuff was potentially harmful, and now at least i'm a bit more informed.

Thanks!