A lover may make you feel weak in the knees, but have they ever made you pass out? Orgasmic syncope, that is, fainting during sex, can occur when the tension that builds up during sex is released during orgasm. The sudden and dramatic drop in heart rate and blood pressure can cause the brain to not get enough oxygen, which leads to fainting. Fortunately, orgasmic syncope is rare and usually harmless!
It never happened to me, or at least there was never a lady that told me after I have awakened beside her while naked. If I did pass out after I had an orgasm ladies can you please let me know?