Are there any olympic sports where cutting weight is a popular way to gain an edge? I'm watching rowing now while doing the dishes, and they say it's "lightweight" where all rowers have to be 160 pounds or under. Clearly, that means there's a benefit to having bigger and stronger guys, at least to a point. Could these guys be like mma/boxers/wrestlers where they'll dehydrate from like 175 pounds to weigh in at 160 and be 175-180 when competing with their muscle mass intact? What is the weigh in procedure like, how long before the event does it happen? Things like power lifting I've always wondered if weight cutting happens.