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.
Wimbledon is the only Grand Slam Tournament played on a grass  court. Started in 1877, The Wimbledon Championships are held at the  All England Club in London and is the oldâ¦est tennis tournament in  the world. The tournament is currently played on 100% perennial  ryegrass.