There was a pretty good article on Xert about how the rattlesnake style intervals are better for some people as opposed to the steady effort style. A lot of it depends on their individual fitness level.
Very geeky article:
There was a pretty good article on Xert about how the rattlesnake style intervals are better for some people as opposed to the steady effort style. A lot of it depends on their individual fitness level.
Very geeky article: