An article for the sheep who want only the most expensive wool pulled over their eyes.
By the same logic, if you avoid exercise and sit in a chair all day long and lay in bed all day long you legs will not get weak.
It's my impression that Anahad O'Connor has a small weekly column, not a full length article, in which she seeks to dispel common medical myths and folklore. REALLY
If you refuse to register with the NY Times, you can use bugmenot.com