A clinician can infer insulin sensitivity and response by observing a patient's behavior, such as falling asleep after meals, especially in conjunction with their diet.

“how sensitive are are they too insulin how do they respond an obvious example is a new york city executive works in an office all day training for a marathon goes out for lunch comes back and is so tired that he has to put his head on the desk and literally fall asleep obviously bob what did you have for lunch well you start putting two and two together and it's it's not that hard”