> I've experienced it after hard days at work (construction), multi hour lifting, cycling 50km. Same shit every time. Surprisingly, unlike what my dumbass brain says, I don't die if I eat only a little and just go to sleep.
I too have experienced this sensation my whole life under such situations. In fact, one of my favorite things to do in life is go for a 6-7 mile run, come home and lift weight for an hour or two... then... wait until I'm hungry (usually about 45 min) and eat an insane amount of food. The food tastes 10x better, and the sensation when eating it is pure bliss.
Always have felt great doing that, and I'm really skinny. We clearly don't have any idea why some people can do that, and others cant. It's probably not until we understand that difference that we'll have any sense what metabolically is happening.