what a relief to read this - thought I was weird with all the morning bathroom activity I have!One thing I have discovered is that too much acidic stuff in my stomach with the bent over position on the bike gives me horrific heartburn. Eating a few nuts or a few tums generally clears it up but I have to lay off the coffee, tomatoes, etc before I ride if I don't want that to happen. Kind of bad cause I'm a serious caffeine addict!HAd a surprising bad case of heartburn on ride today. First time I have put powerade in my camelbak. Any connection I wonder?