Jet Lag shortens life span of mice
They don't know if it affects humans. I am guessing it does.
I'm fairly certain a healthy lifestyle includes hunting and killing your food for lunch, followed by a siesta, and does not include the destruction of one's cicadian rhythms.
The onset of winter in Chicago is usually accompanied by the desire to sleep 16 hours per day. A vestige of some sort of hibernation I'm sure...