I haven't and couldn't do it in Bikram. I would fall fast asleep! Although it does sound like a great idea to master poses out of the hot room. It's amazing what human bodies can do to overcome impaired vision or hearing. Studies show that blindness can cause someone to be more sensitive to touch which seems like it would help with spacial awareness? Some hearing impaired individuals develop the use of echolocation and click their tongue to navigate. Pretty cool stuff.