Here's a quick video by Dr. Susan Brown, author of Better Bones, in which she shows you how to hop so that you benefit your hip bones. These are great exercises to include in your overall workout. Or sometimes when you have a few minutes while waiting for a ride, or waiting for your dog to sniff and explore in your yard (like ours does), you can try the heel lift and drop. Say 50 times in a row. Every little bit counts towards stronger bones.