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.
Australian Open 2014: Stanislas Wawrinka beats Nadal in final. Read more about sharing. Switzerland's Stanislas Wawrinka won his first Grand Slam title with victory over an injury-hit Rafael Nadal in the Australian Open final. Wawrinka withstood a fightback from the world number one, who was struggling with a back problem, to come through 6-3 6-2 3-6 6-3. The 28-year-old becomes only the second Swiss man to win a Grand Slam singles title after 17-time champion Roger Federer.