I am such a busy person. I work two jobs and both jobs are working on a computer. I was sitting all day long and my legs and butt would hurt by sitting so much. This is the exact reason I purchased the TrekDesk.I have had a problem with my left leg. It felt as if it could be circulation issues. I sit all day long and I know that is what caused it. I had a few tests done and it seems I have arthritis in my leg. I was just told to lose weight and get moving. I will now start walking on it a lot more. Hopefully, this will even help with the arthritis.