Serious question. A couple of days now, I've noticed if I really work out hard, I'll start getting the shakes. I took 2 weeks off (mostly due to Sandy) and returned to the gym yesterday and today. Both times, I got the shakes really bad, almost to the point that I couldn't stand up without shaking noticeably. Drinking water did not stop it, and the drive home, I was still shaking, but not that bad. When I eat something, the shakes seem to go away. I didn't eat much the last two days, not because I am dieting, but because I am not at work and not forced to eat lunch at my normal 1PM. I am at the gym at that time instead. Any ideas? Can not eating enough before exercise cause shaking? I've also started really going harder on myself - usually working out for 1.5 hours instead of 1. I don't feel tired though. What is funny though, after two weeks of skipping the treadmill, my legs feel solid. A good solid. Like I am running with wooden legs or something.