I mean, everyone likes blacking out every now and again but this is a little excessive lol. We don't use any A/C at our gym (like most other gyms I imagine) so it's been getting around 90 on a regular basis with a humidity that might as well be precipitation. Lately I've been rolling with more intensity and tonight all we did in class was rolling. I'm getting exhausted which is completely normal for this amount of rolling but I'm blacking out at least once a class. Not to the point of unconsciousness but to the point that I should probably stop walking due to fear of bumping into something. I seem to be pretty hydrated and consciously I feel fine, my vision just cuts off for a bit. Has anyone had this experience? Do I have Aids? I fully expect the best medical advice from the Sherdoctors on this forum.