Parking lots are notoriously crowded during the holiday season. You could turn that congested parking lot into an opportunity to burn some calories. If you're headed to the mall to do some holiday shopping, avoid those fiercely fought over prime parking spots and park far away from the entrance. If you park five minutes away from the mall and walk at a pace of 4 miles per hour (6.4 kilometers per hour), you could burn about 25 calories [source: Health Discovery]. Those calories definitely can add up after multiple mall visits to find perfect gifts for friends and family.