Ken Russell used clips of a short film called "Naked Yoga" or "Nude Yoga" in his art film "The Planets" (1983).
Naked Yoga was shown late one night on UK's Channel 4 in the early to mid-80s.
Screenshots from The Planets are below, but does anyone have the original Nude Yoga film? My guess is that it was a 70s hippie type film.
https://pixhost.to/show/168/70370897...shot_12-18.jpg
https://pixhost.to/show/168/70370898...shot_12-31.jpg
Thanks in advance!