Bernard O'Shea: 10 reasons why laughing more will make you live longer

Laughter improves circulation and lowers blood pressure, making it a heart-healthy habit.

Bernard O'Shea: "When you're in pain, laughing might not fix it, but it'll make you care less."

One of the most effective ways to live longer is to laugh more. As a comedian, I have a vested interest in this research. If laughing adds years to your life, consider my shows a public health service.

1. It's a Free Cardio Workout