I agree with NoDayButToday, they can be a sign of infection. Also I have them but I get them due to the fact that I am on a diuretic because my body hold fluid. I obviously can't pee all night long so my body sweats. I especially sweat alot on my legs. So if you are not feeling ill or you still have them after a tune-up, maybe you are just getting rid of excess fluid. Not a big deal, but it does suck waking up in a swimming pool. LOL
Eric 24/CF