Clare Barker offers cold laser therapy, also called low level laser therapy, at Thorpe Park Hotel and Spa in Leeds, U.K. The therapy is used to reduce pain and inflammation and improve tissue repair. Rugby players, ballet dancers, professional cyclists and soccer players have sought Barker out for services. "I did it on three players and it worked. After that all the players said 'I want that.' I had a queue of eight to 10 people having rehab every day," Barker said.