Fruit moves fastest and green leaves. Meat, cheese, oil and fats slowest.
But we often eat combinations: and the slowest component of your food determines the speed of the whole.
Also: it's a one lane road and "over taking" is not possible.
So, eating a fast moving meal after a slow moving meal results in the fast mover getting stuck behind the slow mover.
Hence I start my day without and slow food (only fruit, herbs, green leaves, spices, ginger => usually a smoothy); and end the day with slow food (oily food, nuts, seeds, beans; usually combined with green leaves as we need a lot green leaves).
YMMV