Lovers' Ultimate Sex Hack: Karezza
Karezza side effects may include more energy and a healthier libido
Not long ago, there was a brief publicity flurry about a venerable, but little known, approach to sex called "karezza" (pronounced ka-RET-za). ABC ran a news story and karezza articles showed up from Argentina to India. The ladies of The View even grappled with it. A karezza subreddit gained steam, and Germany gave birth to a new karezza website.
Research by a grad student at Bowling Green State University attempted to investigate the effects of tantric-sex behavior (in non-tantric practitioners): "Development and Validation of a Tantric Sex Scale: Sexual-Mindfulness, Spiritual Purpose, and Genital/orgasm De-emphasis" (
Turns out, that inexplicable sadness you may feel after sex is very common.