It was a nagging numbness in his left hand that changed everything for Faizal Kottikollon. The Dubai-based businessman had long been a yoga devotee with a penchant for headstands. And that, several concerned doctors eventually concluded, was the problem. Years of overzealous inversions had compressed his vertebrae, damaging his nerves so severely that risky, major surgery appeared to be the only solution.
Kottikollon, then in his late 50s, resolved to find another answer. He…

