Q:

# Do frowning and smiling burn calories?

A:

Both frowning and smiling burn calories. However, they each only burn a tiny fraction of a calorie in every instance. Both frowning and smiling require muscle movement, and any muscle movement requires the use of caloric energy.

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It is impossible to know the exact amount of calories burned with these activities, but one study has found that laughing burns roughly 50 calories per 10 to 15 minutes, or about 5 calories to a little over 1 minute of laughter. Since the typical smile lasts only a few seconds and engages the same (but fewer) muscles than laughter, it is safe to presume that each smile burns only a small fraction of a calorie.

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