Real yogis possess little more than a loin cloth. If they do have a yoga mat, it is filled with nails. http://1.bp.blogspot.com/-foXAHUMFdRs/Tnue3hYoZVI/AAAAAAAALgQ/WXsCVxk2ZvQ/s1600/Indian+Yogi+Sitting+on+Bed+of+Nails+-+Vintage+Postcard.jpg