Fitness fans in Keighley are buffing up their bodies for a nude calendar.

Dozens of regulars at NRGym have volunteered to bare all for the charity calendar.

The men and women hope they’ll have the mental strength to disrobe during the photo shoot this September.

The Worth Way gym will become a photographic studio as members pose in strategic positions behind the fitness equipment.

Gym owners Rousel Chowd-hury, of Utley, and Nick Hindle, of Thornton, hope to raise money for Manorlands with the calendar.

Rousel said the idea came after he and Nick responded to the recent craze for women to post ‘selfie’ photographs on Facebook without make-up.

Rousel said: “We took pictures of ourselves wearing make-up with socks covering our lower regions, and asked people to donate money.”

The prank raised more than £100, prompting the pair to ask members what they thought of organising a nude calendar.

Rousel added: “We put a notice on the gym wall, and so far 48 people have signed up to be photographed.

“We’re thinking that January to November will have a male and female in each shot, picked out of a hat, and the December picture will have everyone else.”

Rousel said the calendar would not be limited to people with perfect, sculpted bodies, but would instead focus on the “average Joe Bloggs”.

He added: “The range of people we’ve got is massive – people who are here to lose a couple of stones or just enjoy getting fit.”

NRGym was opened in July 2012. It was shortlisted last summer in the Best Newcomer category of the National Fitness Awards.

NRGym has one floor including weights and cardiovascular equipment, and also offers ‘functional’ training. All prospective members must be vetted by a committee of Rousel, Nick and three members.

E-mail for details.