I discovered these hellishly awesome things last week and I love them and hate them at the same time. I do them with 10lb dumb bells in reps of 15 and sets of 3 or 4... which isn't much, I know. Something about the compound nature of this exercise kicks my butt though. Especially if I hold the squat for a few seconds. Anybody else do these? Got any similar exercises that use dumb bells in conjunction with some other body weight exercise?