 at least from fish, eggs, and peas. Those are my favorites. But, I mean, of course, you want to get it from lean quality beef and grass-fed, hormone-free. I've got a whole list of those if you go to our website, and you can get that in my book. As a matter of fact, we're giving away our book for free right now. If you want to go, you just pay the shipping, and we send the book to you. Go to MyFreeHealthBook.com, and you can get that.