A person's anaerobic threshold has been reached when their body is under extreme conditions and the burning of oxygen can not keep up with the body's demands.
Novak Djokovic captured his second straight Wimbledon title and the third of his career by defeating Roger Federer 7-6, 6-7, 6-4, 6-3 in Sunday's men's final at the All England Club. Djokovic is the first man to repeat as Wimbledon champion since Federer won five in a row between 2003 and 2007.
Federer, fresher at 35, will seek his record eighth Wimbledon title against Marin Cilic, who beat Federer en route to winning the 2014 U.S. Open and wound up falling despite three match points against Federer in a 2016 Wimbledon quarterfinal.