I'll be in a school contest next week where around 20 or so people will load up in a van, which will not be shut on, and try to stay in as long as we can, an endurance test. You have to drink a cup of gatorade every hour or so. Thing is, you cant pee, throw up, spit, etc while in the van. That disqualifies you. Winner gets $300.
To condition myself, I have been drinking lots of water, then holding my pee back for about 30min to an hour, then going to the bathroom. I was doing this in the hopes that I could enlarge my bladder. What do you guys think? Will that work?