Get in to the hardest poses and get out aliveFive years ago your average yoga class contained a few down dogs, a standing tree and a cushion for meditation. Today, it is becoming increasingly clear that many wish to gain enlightenment through sticking their foot behind their head. Preferably in a handstand, ideally in the splits. And then post it on Instagram.Whether enlightenment is achievable through a one-armed handstand or not, crowded yoga studios are ...