Studies show that if we mess with the body’s natural sleep-wake cycle — say, by working an overnight shift, taking a transatlantic flight or staying up all night with a new baby or puppy — we pay the price.
Our blood pressure goes up, hunger hormones get thrown off and blood sugar control goes south.
We can all recover from an occasional all-nighter, an episode of jet lag or short-term disruptions.
But over time, if living against the clock becomes a way of life, this may set the stage for weight gain and metabolic diseases such as Type 2 diabetes.
Illustration: Katherine Streeter for NPR