Treadmills and bikes, indoors versus outdoors

By Dr. Tom Flaherty, Special to CNN

Updated 1547 GMT (2347 HKT) September 19, 2017

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 />