Who the fuck gives a flying shit about how much water they lose during training (How the hell would you gauge that by waist measurement anyways....hello scale?), and how is wearing a belt going to tell "what happened to your body since last training"?
Either you're a inexperienced guy that is majoring in pointless shit and wasting time and effort, or you're a troll wasting time and trying to waste other people's time for no apparent reason other than a lack of a fucking life. So my advice to you is either to stop sweating the small stuff, or fuck off, depending on which category you fall under. Either way, there's no reason to continue this thread.