When we eat and get fatter, how does that work exactly? What mechanisms are at play that turn the things we eat into the goo that gets stuffed into our fat cells?
Riding back from the Catskills the other day I observed a homeless man walking along the highway dragging his cart of things. Since traffic was slow, I had time to notice that his face was reddish brown, his bare arms were deeply tanned and he sported a full shock of hair. Other than his clothes, he looked kind of good actually. He was probably in his late 40's or early 50's.