And then the Daily Mail sent a reporter (Marianne Power) along to a nude yoga session;
youtube.com/watch?v=d0OS5B5sw2k

As Far As I Can Tell
 

The video has nothing to do with the article. Somebody took a number of photos from various nude yoga photo galleries, streamed them together, and then put a heading on it that referred to the news article. Clickbait at its worst.

here's the article, with video
dailymail.co.uk/femail/article-2793929/femail-tries-naked-yoga-nude-workout-supposed-boost-self-esteem-banish-hang-ups-s-good-lady-gaga-matthew-mcconaughy.html