1. Get Enough Sleep
Sleep deprivation increases the hormone cortisol which suppresses immune function. It’s hard for many busy, working people to get enough sleep, but if you haven’t already, develop a limiting bedtime routine: limit your water and food intake, limit the time you spend in front of screens (TV, computer or phones), limit your thoughts to anything that isn’t worrisome or stressful. Getting at least 7 hours of sleep is best for most adults. 8 hours would be even better.