Walking - 3.5 mph

This activity burns approximately 250 calories per hour

Once you've begun to improve your aerobic fitness level, try increasing your walking pace to 3.5 mph. This pace represents a moderate challenge for most individuals and can be done outside around the neighborhood or even inside on a treadmill. If you'd like an added challenge, try walking at the same rate up hills or on uneven terrains, such as sand at the beach.