I usually only buy items that I really, really need. However, there is one product that I hardly ever use and it's an exercise ball. I came across the exercise ball while I was shopping a few months ago and I was looking for a way to lose a few pounds without joining a gym. I also remember my friends telling me that they use an exercise ball instead of a chair in their office and they said it makes them feel stronger and healthier, so I decided to buy it.