For TigerLily1 and jem51, there's a great gelatin product from Great Lakes Gelatin called "Collagen Hydrolysate" http://greatlakesgelatin.com/consumer/CollagenFAQ.php. It is made from beef and is kosher, and the best thing is that you can put it in coffee, milk, juice, etc. and it does not gel. The rep from the company told me she's switched over to using the hydrolysate exclusively now for that reason.

GabrielaFr, I'm not sure what he says about exercise, so I emailed him and will post when I get an answer.

Although I've been vacillating between following Ray Peat and Matt Stone, I'm leaning more towards Pet again. Anyone else out there???