Improve sleep
Research indicates that an hour of natural light in the morning will help you sleep better. Your body creates a hormone called melatonin that is critical to helping you sleep. Because your body starts producing it when it’s dark, you usually start to feel sleepy two hours after the sun sets. Sunshine regulates your circadian rhythm by telling your body when to increase and decrease your melatonin levels. So, the more daylight exposure you can get, the better your body will produce melatonin when it’s time to go to sleep.
Reduce Stress
Being outside will help your body naturally regulate melatonin. Melatonin lowers stress reactivity which can help reduce your stress level. Play on a jungle gym while you’re outside and multiply the effect – exercise has also been proven to lower stress.
Strengthen your bones
Vitamin D helps your body maintain calcium and prevents brittle, thin, or misshapen bones. Vitamin D isn’t in many of our foods but one of the best (and easiest) ways to get vitamin D is by being outside. Our bodies produce vitamin D when exposed to sunlight for as little as five minutes.
Strengthen your immune system
Vitamin D is also critical for your immune system, and with consistent exposure to sunlight, you can help strengthen it.
Fight off depression
Sunshine boosts your body’s level of serotonin, which is a chemical that improves your mood and helps you stay calm and focused.
Live longer? Maybe
A study that followed 30,000 Swedish women revealed that those who spent more time in the sun lived six months to two years longer than those with less sun exposure. More research needs to be done in this area, but it’s something scientists are continuing to study.
A note of caution: A little sunshine can go a long way (and too much is harmful for our skin). Depending on the shade of your skin, scientists estimate your body can produce vitamin D in about 5 to 30 minutes in the sun. If you're wearing sunscreen, you may not produce as much vitamin D.