Taking a nap would be good for the immune system, according to researchers at Paris Descartes University who deprived 11 young men of sleep on two occasions.
The first time, the participants were unable to resume their sleep the next day. Investigators noted a decrease in the level of an immunoregulatory molecule and an increase in the level of a stress-related hormone, which increases heart rate and blood pressure, among other things.
The second time, they took two 30-minute naps and the levels remained unchanged. A good excuse to go to sleep in the middle of the day.