Botvinnik was a very serious competitor...........took great care of his health ( exercising and avoiding alcohol, tobacco ). Am all for his methods. He used top notch training partners to play serious games. very scientific type guy. ( am not going to open the above link )
What do you think about Botvinnik's method of preparing for competition?

The link in the OP's initial post above is safe. It's an article by Dan Heisman in the ChessCafe.com archives. There is a lot of very useful and instructive content in the archives...
https://web.archive.org/web/20140625052220/http://www.chesscafe.com/archives/archives.htm
Note the page may take a little while to load as the servers are sometimes a little slow.
"... everyone is different, so what works for one person may likely fail with another ..." - NM Dan Heisman (2002)
https://web.archive.org/web/20140627084053/http://www.chesscafe.com/text/heisman19.pdf