The AlterG Anti-Gravity Treadmill M310 is an amazing $24,500 treadmill that is based on technology developed by NASA for astronauts to use to exercise atrophied muscles after returning to Earth. This same technology can be also useful for athletes and people with injuries that need to undergo rehab. The AlterG allows people to run or walk at a fraction of their body weight. The user wears a special pair of shorts and zips the waist into a pressurized airtight enclosure, which is suspended over the treadmill surface. By controlling the pressure in the enclosure, the clinician can reduce the
weight of the individual by as much as 80%.
You can see a video of the treadmill in action here
. You can have to put on special AlterG elastic shorts, seal yourself into the circular cockpit and fill the bag with air before you can start exercising. The website
also says the AlterG can be purchased for $499 a month on a five year lease-to-own plane.