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.
The Records for the Longest Tennis Match The most memorable part of Wimbledon 2010, Day 4, was the fact that the seemingly never-ending match came to an end with the defeat of French qualifier, Nicolas Mahut at the hands of 23rd seeded American, John Isner.