Anal: Sex

: Research indicates that a significant percentage of adults engage in anal intercourse. A large-scale survey published in the National Institutes of Health (NIH) PMC database confirms that receptive anal intercourse is practiced broadly across different age brackets, genders, and sexual orientations. Longitudinal health behavioral data in the U.S. demonstrates that roughly 30% to 35% of heterosexual men and women report engaging in heterosexual anal intercourse. The Anatomy of Anal Pleasure

The anus has two muscle rings. The external sphincter is under voluntary control, meaning you can consciously relax it. The internal sphincter operates automatically and responds to pressure and relaxation. Anal sex

Anal Sex: A Comprehensive Guide to Safety, Pleasure, and Communication : Research indicates that a significant percentage of