According to a recent study people who sleep 8 hours are less likely to get sick than those who sleep seven or less.
Willing cold victims were recruited by placing ads: 78 men and 75 women, age 21-55 participated. They were all healthy and agreed to go one in one with the cold virus.
Firstly their sleep habits were recorded for two weeks: every evening they were interviewed by phone about their sleep the night before.
They then checked into a hotel for five days where they were subjected to the cold virus. One hundred & thirty-five participants became infected, only 54 people got sick.
Result: Those who tossed and turned more than 8 percent of the time in bed were 5 times more likely to get sick than those who tossed and turned 2% of the time.
Sleep may therefore be an excellent preventive measure against the flu virus.