No, it doesn't. And to gain healthy weight, you join a gym and discuss your nutrition program with your coach.

Oh and drinking extreme amounts of water in a short time can be dangerous, stay away from such a thing.

Idk, I don't have a bussy.

I hope not. When I eat unhealthily I drink a lot of water hoping it balances it out

You sure?

I've been drinking a lot of water before and I just get thinner.

No

In fact water is needed for your body to burn fat effectively. Naturally anything that weighs mass will increase your weight whilst its inside you, but it doesn't stay inside you for long unless you're body converts it into fat/muscle. Water will do neither. It will bloat you momentarily but thats about it. Too much water will cause your cells to burst and you'll get brain swelling and die.

Dd