About these classes: Classes for men in private home on occasional evenings, sponsored by Utah Male Naturists for its members. Contact club for schedule.

About these classes: For men. Wednesdays and Thursdays, 8:00 - 9:30 p.m., and Sundays, 7:00 - 8:30 p.m.

About these classes: For men. Separate nude classes in Decatur area for Hatha and Kundalini. See web site for schedule. Small class size; online registration required.

About these classes: For men. See Practice page of web site for schedule and locations.

About this group: Sunboys started the gay social nudist movement for Australia in 1991. We provide a safe environment for social nudity for gay or curious men, and currently host pool parties, dances, and beach trips.

About this group: YYC-MEN is a not-for-profit social fellowship for gay male naturists / nudists in the Greater Calgary and Southern Alberta areas. Our Name reflects our sole purpose: YYC-MEN (Calgary Men Enjoying Naturism). YYC-MEN membership is open to men 18+ years.

About these classes: Sundays at 9:30 a.m. and 4 p.m. and Fridays at 7:30 p.m. Check schedule for exceptions and other classes (e.g., clothed yoga and stretch). Reservations required; 20% discount if more than two days in advance.

About these classes: Mixed-gender. Class meets one or more Thursdays per month at 7:30 p.m. See web site for upcoming dates.

About these classes: CE Yoga studio strives to provide a welcoming learning space for men who practise yoga. We offer private and small-group classes, naked and clothed, for beginners and intermediate yogis. We're located at the heart of Potts Point, Sydney, just 50m from Kings Cross Station. CE Yoga has no minimum commitment or ongoing membership fee. Single-visit classes can be purchased online for both group and private sessions. Discounted packages are available at the studio.

About these classes: "Yoga in the Buff!" Mixed-gender and nude-mandatory. See web site for upcoming date(s) or to contact instructor.

About this group: NCEB, also known as Male Nudists NCEB, is for all men who live and work in the San Francisco Bay Area (particularly those who are in the East Bay) that have a desire for fraternity, fellowship, male bonding, and building lifelong friendships with other men who share the philosophy that clothing is the mask, the barrier, that separates us from one another and hampers our ability to be free, open and accepting of one another for who we really are -- unclad and free from the social strictures of clothing.

We hold eight Nudefest events per year (in addition to other special gatherings) focusing on community-building through ritual, male bonding, gay men's issues, spirituality, and building friendships with kindred spirits to last a lifetime.

About these classes: This group serves men in and around the areas of Apex, Carrboro, Cary, Chapel Hill, Durham and Raleigh. We begin offering Sunday evening classes as of August 23, 2015. Please check out our site. We warmly welcome naked yogis from all around the world. Please contact us through the Meetup group if you are interested in attending or guest teaching.