How long you should walk or run on the treadmill depends on whether your goal is weight loss or cardio fitness and health.

So if you have creaky joints or need added cushion when you walk, you may find walking on a treadmill more comfortable than ...

There are some hard-and-fast rules when it comes to moving your walk or run indoors—for instance, you’ll want to hop on the treadmill if there’s a chance of lightning or if the air quality ...