I agree that quality matters more than quantity...In DDs gym, the optionals team trains together (it's a small gym--less than 15 optionals girls) and they all train 18-20 hours per week. Some girls have almost no progression, but others seem to rocket out of nowhere. It is all in how they use their time. For example: DD HATES just standing around waiting her turn, so when they're on bars and there's more than 2 girls ahead of her, she's on the wall bars doing leg lefts or working handstand pirouettes on the floor bar, etc. HC doesn't tell her to do them, but she has never been a 'time waster' (for lack of a better phrase)...As such, her bars skills have become very strong while those of some of her teammates who have been with her the past few years seem to have stalled out.