Protects the Heart
People who laugh a lot on a regular basis have lower blood pressure than the average person. When people have a good laugh, the blood pressure increases at first, but then it decreases to levels below normal.
Your heart is a muscle and like any muscle in your body, it gets stronger and functions better when exercised. Regular laughter is like getting a gym membership for your heart. Laughter has been found to benefit the way blood flows around the body, reducing the likelihood of heart disease. The research said that 15 minutes of laughter a day is as important for your heart as 30 minutes of exercise 3 times a week.
Found on: http://www.wonderslist.com/