http://www.newsweek.com/women-orgasm-three-types-research-1732522

Women are capable of having three kinds of orgasm that have been dubbed the volcano, the wave and the avalanche, a study has found.

Researchers working alongside sex toy company Lioness studied the pelvic floor muscle contractions from a group of around 50 female volunteers as they climaxed. They found that their muscles contracted in three distinct ways.