Today I was hiking up some steep tricky terrain. I got up and just kind of collapsed. I was dizzy and my muscles were very weak. My hiking partner indicated that there was a nice place to sit a little ways a way and I insisted on sitting down immediately. I did for awhile, ate and drank and got up, still didn't feel great, but about an hour later felt better.

I wondered if this has happened to anybody else. I speculated it was a "glycogen" depletion type event. ?

Any ideas. I usually eat rather high carb meal the day before and didn't yesterday as I was out to eat.

--des