Well I am not skinny yet, but I used to be, and every time I would go out to eat, the server woukd ask me if my meal was ok because I only needed a few bites to fill me up, which left most of it on the plate! That's was years ago, before my sleeve, but see? That's how skinny people are skinny and stay skinny. They eat enough to satisfy themselves and that's that. Since I got fat, I don't like leaving food on my plate. Hey, I paid for it and I was gonna get my money's worth! I also NEVER brought home doggy bags when I was skinny, which at that time in my life I believed help me stay skinny.
Also, when I was skinny, I was always so cold! I used to bring little granny sweaters with me to every restaurant, department store, and casino because the air conidiotinng was just too much. I used to practically run outside into 100 degree heat from an air conditioned building and just stand there and soak it up, like a cat through a sun filled window. Now all I do is sweat.
It's been a LONG time since I've been cold due to my 100 lb weight gain, even in the snow lol! Last year I took my son skiing, and I was so HOT underneath all the gear. I wanted to start stripping layers and I was drenched in sweat underneath. Not fun. Not a good feeling. That never happened to me when I was skinny.