Why tired people get sick
4th September 2015
By Amanda Davey
Sleep deprived people are more than four times more likely to catch a cold than those who get plenty of shuteye, scientists report.

The US researchers report that those who sleep fewer than five hours a night are 4.5 times more likely to get sick than those who sleep seven hours or more.
This is based on a two-part experiment in which they collected nightly sleep data on 164 healthy people for one week