In a creamy sea of mattresses in a cream-carpeted hall, a dark-haired man in a white hoodie and matching yoga pants is sitting in the lotus position. His eyes are closed and he wears a focused, intense expression on his face. Suddenly he stirs, his chest hollowing slightly and his head jerking back, and then he’s off – bouncing up and down through the air on his knees. Sometimes he does one hop and then stops, his head hanging down for a few moments. Another little jerk, and he propels…

