Artifactos - That has happened to me on several occasions, I think it is just the extra energy our bodies consume at that time throws us off on how much to eat and prepare for a ride. I have blood sugar that drops easily as it is and if it is the days leading up to my period I REALLY have to watch out and always carry snacks. Yes it's annoying I agree but it sounds like you were whompin' on the boys regardless, kudos to you! You'll finish kickin' their butts next time, no worries.