I asked someone what is the most important part of the body?
He replied: "Heart"
I said No. Its shoulder. Do you know why?
He replied: "Because it raised your head?"
I said No. The reason is when someone your beloved is crying, your shoulders supports them. Sometimes others need to be supported by these shoulders in life.
Important part of the body is not for yourself, its for others, its companion and sympathy of others.