Just when you thought the fitness industry had delivered on just about everything imaginable - this happens!
A UK personal trainer has started "nude-ercise", where as the name suggests, everyone participates naked.
Everyone from the age of 33-70 is welcome for the hour long boot camp style exercise class, that caters for all fitness levels.
There's jumping jacks and push-ups - all kinds of intense exercise both sexes would probably want lots of.....well....support for!
Meet Helen Smith - "Nude-ercise"
Upon visiting a nude beach in France, Helen Smith got the idea for her unique fitness classes.
Smith says it's a "great way to celebrate the body."
And her clients obviously agree - 66-year-old nudist Colin Campbell says it's all about “normalizing the human form."
Smith says anyone acting strangely in the class is asked to leave, and must register via email first and provide ID, so everyone has peace of mind.
And if you don't feel like getting completely naked? No problem, you're welcome to throw on some underwear.
Some of the atendees say there are plenty of advantages to the classes - including not having any sweaty gym clothes to wash afterward.
Yep, I'm sure that's the only reason they go!
Ms Smith says naked instructing means the clients get a better idea of what the trainer is doing: "the main benefit of exercising naked is that you can really see what the instructor is doing in the exercises" she said.
"For example, if you are doing a plank but wearing baggy exercise clothes, it is hard to tell if you have the correct form or not."
The class takes place once a month in Nursling Village Hall in Southampton, but Smith says she hopes to expand to different locations all over the U.K.