the biggest aspect I find with prep and especially water/sodium manipulation is to work WITH the body, not against it.

Understanding the roles and mechanisms of sodium and water in the body allows you to understand what, when and how to tweak.

If you're dropping more than 3-4lbs from Friday to Saturday you either ****ed up your diet or you're flat as a pancake because you sucked down too much. Its a delicate balance as P said.