Would you step semi-naked into a vat of vapourised liquid nitrogen as cold as -190 degrees Celsius? Fastest man in the world Usain Bolt and football megastar Cristiano Ronaldo are reportedly hooked on doing just that. So are a number of world-class footballers, Formula One drivers, basketballers and even Hollywood stars like Daniel Craig and Demi Moore. It’s called whole body cryotherapy, and it involves the use of low temperatures in medical treatment. Just think of it as an extreme take on the concept of ice baths.
