YouTube often refers to the exception as “EDSA”, which stands for “Educational, Documentary, Scientific or Artistic”, according to Grosack.
Nudity: YouTube does not allow nudity that is “meant to be sexually gratifying (like pornography)” but there are instances where nudity can have scientific value, like a video with imagery of a medical professional conducting a physical examination. In addition, YouTube may allow videos posted by a photographer exhibiting nude portraits or a music video featuring nude or semi-nude dancers “for artistic purposes”.
BUT....you can search for breast feeding, or Brazilian waxing etc and now naked yoga and get an eyeful!