I had a work colleague for a period of time...may he rest in peace.. who was a survivor of the Bataan Death March. He told me the guys who were mean, lean and fit (low BMI) were the first to go and died like flies. No fat reserves to tide them over rough times.
I have seen several bios of people who have died of this and were said to be marathon runners. I wondered if there was a connection or mere coincidence.
Because they were not being fed
Don’t kid yourself