We change physiologically when we laugh. We stretch muscles throughout our face and body, our pulse and blood pressure go up, and we breathe faster, sending more oxygen to our tissues.
People who believe in the benefits of laughter say it can be like a mild workout — and may offer some of the same advantages as a workout.
“The effects of laughter and exercise are very similar,” says Wilson. “Combining laughter and movement, like waving your arms, is a great way to boost your heart rate.” (Sort of like….well….a favorite form of exercise…)
One pioneer in laughter research, William Fry, claimed it took ten minutes on a rowing machine for his heart rate to reach the level it would after just one minute of hearty laughter.
And laughter appears to burn calories, too. Maciej Buchowski, a researcher from Vanderbilt University, conducted a small study in which he measured the amount of calories expended in laughing. It turned out that 10-15 minutes of laughter burned 50 calories (and it’s better than farting outloud in public).
While the results are intriguing, don’t be too hasty in ditching that treadmill. One piece of chocolate has about 50 calories; at the rate of 50 calories per hour, losing one pound would require about 12 hours of concentrated laughter!
Laughter’s Effects on the Body
In the last few decades, researchers have studied laughter’s effects on the body and turned up some potentially interesting information on how it affects us:
Blood flow (this already sounds dangerous). Researchers at the University of Maryland studied the effects on blood vessels when people were shown either comedies or dramas. After the screening, the blood vessels of the group who watched the comedy behaved normally — expanding and contracting easily. But the blood vessels in people who watched the drama tended to tense up, restricting blood flow.
(So if you hate your mother in law and you’d rather she be “on another plane,” make her watch dramas and scary movies!!)