Yes, protein can convert to sugar but at a very slow rate which gives us a more steady supply. I guess the 2 hours, which I myself find a little extreme, is for the same reason, to keep our blood sugar steady throughout the day. In reality, I'm sure what he was talking about was having multiple snacks instead of our traditional 3 meals. The late Carlton Fredericks, who wrote one of the first books about hypoglycemia called "Low Blood Sugar And You", suggested having about 5 small meals a day, and since most people are awak e for an average of 16-17 hours that would've made it roughly every 3 hours. I remember how during the early 90s the magazine "Woman's World" ran a feature of a woman who lost a lot of weight eating that way, which made a lot of sense to me because eating that way prevents us to ever get ravenously hungry and then overeating and I really really wanted to do it but being a busy single Mom I couldn't, it's a rare work place which will let you take several small breaks throughout the day, and even if they don't mind the flow of work might not allow it. So I know I ran my poor adrenals ragged by eating out of schedule way too often.