It is easy to eat 300 calories. But how much exercise does it take to burn 300 calories? To maintain a healthy weight, balance calories (energy) in with calories (energy) out. This video shows how many calories there are in common snacks and foods and how much activity is required to burn off excess calories. Visit http://bit.ly/18RmA3V to find out how to track your calories in and out and support a healthier lifestyle. .