I really want one but have no idea why...
I don't know that I would walk any more or less if I had one - I already have to walk the dog every day which entails a solid hour of fast paced walking which is around 5.5k - 6k. on a school day, less when I have children in tow. Then I do exercise too. My sister has one but not even sure why she has one either! Just feels like everyone has one!