Is it actually possible?

Yes! Sexual intercourse is some sort of like an exercise, and when you exercise, oxygen is reduced. If you engage in vigorous exercises and not know how to control your breath, oxygen flowing to your brain will be reduced and you'll possibly go into hyperventillation (not only hyperventillation, but if you're hungry, stress, or anxious too). So, ......   1 reply

Just find out by doing it in real life, that's your answer kid.   reply