Get Enough Sunlight
Sunlight is essential for human health and well-being. It is the most natural way to get enough vitamin D. Vitamin D is necessary for key biological processes to take place in the body. Getting enough sunlight reduces stress, maintains strong bones, fights depression and can give you a longer life.
It also strengthens your immune system. People with darker skin may need a little more than this. Your exposure time should depend on how sensitive your skin is to sunlight.