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.
Roger Federer beats Rafael Nadal at Aussie Open to win 18th Grand Slam title. Melbourne Park, Melbourne, Australia - 29/1/17 Switzerlandâs Roger Federer celebrates winning his Menâs singles final match against Spainâs Rafael Nadal.