Fainting in coils

Back from Hawaii, and trying to get back in the swing of things, yet ... went to the gym today, to work out with my friend Mike. I was on the squat press, going for a heavier weight than usual, when I felt that familiar light-headed feeling, so I quickly sat down and leaned back ... and passed out.

Luckily, Mike is a doctor (as it seems like every other guy at the gym is), so he knew what to do. I came to after about fifteen seconds and he watched over me as I rested, sat up, drank some water, etc. The gym staff wanted to call ambulance but I told them not to, as this has happened to me before ... not in five years, though. That darn vaso-vagal reaction.