Does putting a black plastic bag over your stomach when doing sit ups help you loose more weight or something?
Sounds like a stupid question lol. But just wonderedd! .x
As taichi said - losing fluid is not losing weight. You will be dehydrated, so any fluid you drink afterwards will be retained by your body and not urinated.
Weight back on straight away.
Making yourself sweat more during exercise can lead to chaffing skin and heat rash. Not a good look.