I am a 15 year old healthy male, who gets lots of exercise. I am not sexually active. Today I exercised for like 6 hours and drank like 10 bottles (NOT cups) of water, and yet have not had the urge to pee all day. I went to the bathroom to try and a little bit came out, but nothing substantial. It was slightly yellow but nothing abnormal, other than the fact that usually when I drink so much water it is clear. I m not sure whats wrong, as I have no other symptoms and feel just fine. It s worrying me because it seems bizarre that I would drink that much and not even have to pee. I appreciate the help.