Research shows adults sleeping less than six hours a night are four times more likely to catch a cold.
Quicker to Catch a Cold
In a key study, researchers tracked volunteers' sleep for a week, then quarantined them and administered nasal drops with a common cold virus. Those with shorter sleep caught colds four times more often.
The Connection
While not proving causation, the findings reveal a clear link between sleep deprivation and weakened immunity, underscoring sleep's vital role in health.
