There are many health benefits from lemon. Its juice contains many nutrients and vitamins. It is an excellent source of fiber, potassium, magnesium, calcium, folic acid and beta-carotene. Do you know how many benefits to the body and mind come from having a slice of lemon near your bed. All you have to do is take a piece of lemon and sprinkle salt over it and keep it at your bedside. This sounds a bit strange, but believe it, researchers have claimed that doing so can provide miraculous health benefits.