How Does One Heart Beat?

Every person in this world has a heart that beats for a reason. Some people's hearts beat rapidly because of their feeling of affection to their significant other. Other people's hearts beat slow, but loud because of anger. Sometimes, you get that feeling that your heart isn't beating at all, but it is, you just can't feel it, or you refuse to ... and that's the feeling of pain, and disappointment, or sadness.