What are the reasons that people actually think laughing has health benefits?

Laughing and health: Laughing stimulates your immune system and releases tension, even when you do a forced, deep belly laugh. There have been studies published on the effects. In addition, being happy is the best way to have health and manifest your dreams!

Laugh Out Loud !!: I agree with dr. Tenpenny. From a psychiatric standpoint - laughing & humor are probably the highest / healthiest form of defense mechanism. When I am really stressed, I am usually laughing my head off (no not literally). I am sure you know this proverb: "laughter is the best medicine." or "laughter is a tranquilizer with no side effects." (arnold glasow) or "always laugh when you can. It is >>.