Open those curtains — either before you go to bed or as soon as you wake up.
You know how we're told to avoid the blue light that comes from our phones and screens at night because it keeps us up? Well, the strongest source of that blue light is the sun, sleep expert Michael Breus, PhD, author of The Power of When, tells BuzzFeed Health. So if you let sunlight into your room first thing the morning, it can reduce your level of melatonin, which will make you less sleepy and more energized.
Even better, sunlight also raises levels of the neurotransmitter serotonin in your body, which has been linked to a better mood and a calm demeanor. “If you get up in a bad mood in the morning, the light really does make a difference,” Dr. Jess Shatkin, professor of child and adolescent psychiatry and pediatrics at NYU Langone Medical Center, tells BuzzFeed Health.