Whether you are laying out by the pool or swimming with the dolphins on an excursion, you are constantly placing yourself in the sun. The health benefits of the sun are endless. First, the sun stimulates the production of Vitamin D in your body. It also helps fight heart disease and cancer while promoting better sleep, boosting your serotonin levels and fighting depression. However, staying out in the sun for too long without protection could be disastrous. Always remember to pack plenty of sunscreen and reapply throughout the day.