Evidence accumulated over the last few decades demonstrates adequate sleep improves the ability of the immune system to resist infection. Shorter sleep duration in otherwise healthy people is associated with an increased risk of developing the common cold. In one study researchers found 50% of those sleeping less than 5 hours per night in the preceding week got infected. Only 18% of those sleeping an average of 7+ hours were infected. Chronic sleep deprivation also contributes to an increased risk of obesity—a known comorbidity for COVID-19.
PositiveTip: Equip your body to resist infections by getting enough sleep every night.