Reebok FitHub Sport Relief 24 Hour Challenge [Getty Images]

LONDON, ENGLAND - MARCH 15: Boxer David Haye meets customers and takes part in the Reebok FitHub Sport Relief 24 Hour Challenge at the Covent Garden Reebok FitHub on March 15, 2013 in London, England. Members of the public are joining Reebok FitHub ambassadors and staff to cycle, or run continuously for 24 hours to raise money for Sport Relief. (Photo by Stuart C. Wilson/Getty Images for Reebok)

Getty Images Entertainment Stuart C. Wilson