Nude yoga is catching on in cities like Boston, New York, Chicago, San Francisco and Salt Lake City. Practitioners say naked yoga gives people a chance to be healthy and sensual without being sexual, insisting it isn’t about sex, ABC News reports.

But some more traditional yoga instructors, who practice with their clothes on, question the need to be naked to do yoga. Some who’ve attended the naked yoga classes say there is a strong sensual element, or undertone of sex, and that the yoga seems almost secondary.

Nude yoga appears to be more popular among gay men, but there are also a few co-ed groups of men and women of different sexual orientations.

Tags:

Boston, chicago, gay men, naked yoga, New York City, Salt Lake City, san francisco, sex, Sexuality, Yoga