A 2009 study found that participants who reported getting less than seven hours of sleep per night over the course of a 14-day period were nearly three times more likely to fall ill when exposed to the common cold virus than those who got at least eight hours. And a 2015 study came to similar conclusions. Participants who reported getting less than six hours of sleep a night over the course of just one week were more than four times more likely to come down with the common cold than those who slept more than seven hours -- and those who slept less than five hours were even more susceptible.
Doctor Ayati's clinic, Geriatric Concierge Center
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