If you're looking for a way to prevent a winter cold, try getting eight hours of sleep.
Researchers at Carnegie Mellon University studied 153 men and women. All filled out surveys detailing their sleep history, then they were injected with the common cold. For five days they reported any cold symptoms they had.
They found participants who got less than seven hours of sleep were three times more likely to develop respiratory illness compared to those who slept eight hours or more. Researchers also found participants who had trouble sleeping while in bed, even if it was for eight hours, had an increased risk for a cold.
Experts say a lack of sleep interferes with the body's immune response, therefore it may make it easier for infection to flourish.