Inclusions which arent healthy: Lard, bone broth, meat, especially beef, grass fed or not. Bacon and dairy, which are advocated variably.
Exclusions which are healthy: Some fruits like apples, citrus, legumes, whole grains.
But the ratios are the biggest problem. The blue zone diets are no where near the fat or protein intake as VLC diets. Veggies, fruits, legumes, nuts and whole grains should be the bulk of ones diet, roughly 80-90% of caloric intake. Animal protein should be eaten sparingly. And training your body to metabolize fats is nonsense.
Basically, substitute animal protein and fat for carbohydrates in your description of an appropriate diet
ETA Unless youre a competitive eater, there is no way you will gain a few pounds after a single meal.
1. No it's not; you should look into it. It's a growing branch of knowledge in the competitive training field.
2. I gained 0.7 lbs in 3 days; too long between to measurements to conclude the effect. That being said, I managed to not gorge myself which is not typically the case with this particular customer; he took pity on me when I said I was trying to do a low-carb purge by not ordering too many rolls.