Be careful....I kept talking to the A&P teacher after the female reproductive anatomy session about things that weren't explained right, and eventually she said (nicely, thank goodness!) "Would YOU like to teach this part?" So I did, for the following 18 months
I don't know enough about primal research yet to give any advice on that, though.
Zone diet on and off for several years....worked, but too much focus on exact meal composition
Primal since July 2010...skinniest I've ever been and the least stressed about food