Physical fitness is given a lot of attention by players at the very top of chess. Here is a quote from an article that talks a bit about it.
“Anand has been pretty active as well,” says the Bad Sodener Zeitung. “He bought a season ticket for the swimming pool in Bad Soden and swam about 1000 metres per day. He would also run 10km every day and has also been spotted on a bicycle in the beautiful hills around Bad Soden. He lost about six kilos this summer. Most of the time, though, Anand prepared for the match in the Chess Tigers Training Centre with his seconds.”
“Anand has been pretty active as well,” says the Bad Sodener Zeitung. “He bought a season ticket for the swimming pool in Bad Soden and swam about 1000 metres per day. He would also run 10km every day and has also been spotted on a bicycle in the beautiful hills around Bad Soden. He lost about six kilos this summer. Most of the time, though, Anand prepared for the match in the Chess Tigers Training Centre with his seconds.”
http://www.dnaindia.com/india/report-viswanathan-anand-world...