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Another source of energy expenditure that does not require exercise, PureFit Keto Shark Tank is the new weight loss supplement. If you jiggle your leg, tap your foot, or twirl a pen, you're burning a small number of calories that can add up over the course of a day or week. In fact, one study found that fidgeting or other non-exercise movement (which was more common among lean than obese individuals) could burn up to 350 calories a day.

But it's not clear why some people fidget while others don't; a "non-fidgeter" may have a hard time picking up the habit. And there may be other benefits to fidgeting; for some, it seems to help them learn on