hambertloot (the OP) is 17 years old. He's really only just getting into the whole cycling thing and probably (evidently) had not sorted out the eating.
http://www.bikeforums.net/showthread...re-easy-for-me
I think it's great that he's out cycling, and doing things like riding centuries, rather than spending time at home sitting in front of a TV or computer. More teenagers should do such things!