They do a lot more than put a flush in your cheeks.
By Corrie Pikul Original Content | July 27, 2012
Illustration: Jen Troyer
Sex researchers Masters and Johnson labeled "intense orgasms" (like the kind where Sally's not faking it) as involving 8 to 12 vaginal contractions, each lasting 4.0 to 9.6 seconds. That adds up to over two minutes of continuous mind-bending bliss.