In looking for another exercise beyond running and cycling, 15+ years ago, I bought a pair of rollerblades. My daughter was maybe 3 years old. I live on not-flat road that's not hot pack asphalt, but what I refer to as oil and gravel. They drip liquid tar onto it and then spread coarse gravel/fine rubble. So it's rough and has lots of patches. Well, that's where I tried rollerblading. I started getting the hang of it a couple of times only to take a couple of spills. Evidently my daughter was watching from the front window and laughing so hard, my wife started watching, too. I finally jammed a finger and came in to a couple of beautiful ladies with red faces and tears on their faces from laughing so hard.