Surprising factors that may keep you thin

By Dr. Melina Jampolis, CNN

Updated 1618 GMT (0018 HKT) October 18, 2018

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Laughter is not only the best medicine, it is the most effortless way to burn calories. Chuckling through a 15-minute stand-up comedy routine can burn between 10 and 40 calories. And this feel-good activity releases a feel-good hormone called serotonin that could reduce appetite.<br />
Photos: 10 ways to burn calories without stepping foot in the gym
Good belly-slimming laugh – Laughter is not only the best medicine, it is the most effortless way to burn calories. Chuckling through a 15-minute stand-up comedy routine can burn between 10 and 40 calories. And this feel-good activity releases a feel-good hormone called serotonin that could reduce appetite.
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Whether you love the disco or can only tolerate an occasional slow dance at weddings, dancing has major weight loss potential. Jamming with friends at a party can burn between 450 and 600 calories, depending on how vigorously you get down. Even swaying at a concert for an hour can counter the effects of that small 230-calorie order of McDonald's French fries you might be tempted to eat on the way home.<br />
Photos: 10 ways to burn calories without stepping foot in the gym
Lose the belly dance – Whether you love the disco or can only tolerate an occasional slow dance at weddings, dancing has major weight loss potential. Jamming with friends at a party can burn between 450 and 600 calories, depending on how vigorously you get down. Even swaying at a concert for an hour can counter the effects of that small 230-calorie order of McDonald's French fries you might be tempted to eat on the way home.
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Sex is one of the best workouts outside the gym. For those who can make it last 30 minutes, intercourse can burn about 160 calories. The same amount of foreplay expends about 55 calories.
Photos: 10 ways to burn calories without stepping foot in the gym
Hot and less heavy – Sex is one of the best workouts outside the gym. For those who can make it last 30 minutes, intercourse can burn about 160 calories. The same amount of foreplay expends about 55 calories.
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