I was just doing a little browsing and came across a beautiful and informative infographic. I thought some of you might appreciate it so here is a link:
[url=http://www.greatist.com/fitness/interval-training-complete-guide/]The Complete Guide to Interval Training [Infographic] | Greatist[/url]
That's awesome! Thanks. I have a bunch of people I can send that link out to, rather than try to explain the whole thing myself with my limited knowledge.
Rolando from Greatist here... glad you liked our infographic!