Before orgasm, alpha waves in our brains slow down. Kinsey, who once said that 75 percent of men can ejaculate within two minutes. Most Read on IOL. If you can help her reach orgasm No. But in the late s, medical men were still having earnest discussions in the pages of medical journals about whether menstruating women emitted a poisonous substance called menotoxin, that made Multiple orgasms on bed wilt.