Try to stand up as much as possible throughout the day even if there are ample opportunities to sit, says sports dietitian and nutrition educator Brian St. Pierre. "When you're standing, you burn more calories," St. Pierre says. Challenge yourself to avoid states of immobility. If you work in an office where elevators are the norm, take the stairs every time. If you have a long commute on the subway, stand the whole way home. "These may seem like small things, but when you do multiple versions of them in combination, you can really expend more energy," St. Pierre says.

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