last night before i went to bed i weighed in at 183lbs. I was feeling particularly bloated and looking a little soft. I took a nice healthy piss before going to bed, and i remember having to get up 2-3 times during the night to piss again. Finally, when i got up, i took ANOTHER big piss, and weighed in at 177lbs. This morning i look hard and lean. this has been happening to me a lot lately (the getting up multiple times to piss) ... just wondering what some possible causes are?