Imagine yourself in a gym with 30 other people, and the room is heated to 120 degrees Fahrenheit for the next 90 minutes. Your body is already dripping with sweat, and that's just the beginning. A series of 26 different postures awaits you, from the eagle to the triangle to the half moon, interspersed with two breathing exercises, essential if you care at all about your lungs. Behind you, you feel a man coming and going, dressed only in a tight black bathing suit and the golden Rolex on his wrist. His voice penetrates you, guiding your every move, and everyone around you obeys him. Before you, celebrities like George Harrison, Frank Sinatra or Madonna have practiced this “hot yoga”, a practice that supposedly cures everything: arthritis, lumbago, heart problems...