Make Sleep a Priority

Several studies confirm the link between sleep and a healthy immune system. Most people need between 7 to 9 hours to feel adequately rested. Being well rested improves the function of white blood cells, so you're less likely to get illnesses like respiratory infections, colds, and the flu. Practice good sleep hygiene to optimize sleep. That means waking up and going to bed at the same time every day, even on weekends. Avoid substances that can interfere with sleep, like caffeine and alcohol, for several hours before bedtime. You're more likely to sleep well if your bedroom is cooler. Establish a relaxing evening routine before bedtime. Enjoy a warm bath, relaxing music, or a cup of tea to help you drift off to sleep more easily.