I tried using one (a very cheap one). It was extremely boring compared to walking around the block. After a few days it began hurting my ankles. My guess is that although the surface was (extremely) resilient my legs were unhappy about landing inside a cone.
You Enjoy Myself. Here is a good example, you can fast forward to 9:00 if you like.
The problem is walking around the block in the winter in Massachusetts is hard. Even during the few daylight hours it’s still cold as hell and hard to get the motivation to do.
Anyway, I ordered a cheap one off of Amazon–it should arrive early this week, so we’ll see what we’ll see! Hopefully I can do it while I watch TV and keep myself entertained. I got one with bands rather than springs; it claims it isn’t as loud as the ones with springs.