(HealthDayNews) -- Before you pop that cookie in your mouth, take a moment to consider how long it will take to burn off those extra calories.
If you eat two cookies -- about 150 calories -- and you weigh about 140 pounds, you'll have to walk more than an hour at a pace of 2 miles an hour to burn off those cookies, according to the Mayo Clinic.
Speed up the pace to 3.5 mph, and you'll still have to walk for 45 minutes.
By comparison, eating a 40-calorie peach will take just 10 minutes of brisk walking to work off.
