Not that you didn’t know this already, but further research has confirmed that sleep is essential for fighting off illness and staying healthy. Cleveland Clinic Wellness notes:

If you find yourself trying to push through illness or regularly skimp on sleep, listen up: scientists are homing in on how sleep helps us heal. A recent study showed that sleep helps immune cells known as T-cells do their jobs—attaching to and killing viruses and other invaders. Prioritize sleep by limiting caffeine and alcohol too close to bedtime, following a set bedtime and wake time, getting regular exercise, and having a relaxing, tech-free wind-down routine at night.

There’s always so much to do, but getting to bed on time will help you stay ready to do it.