Space tech treadmill brought to Earth

Space technology is helping exercisers get fit here on planet Earth.

The new "alter-g" enables people with illnesses, injuries, or who recently had surgery to exercise.

It's an anti-gravity treadmill which uses air pressure to help you lose weight.

Users describe it as like being on air.

Brad Stephenson, a muscular dystrophy patient said, "You're able to unweight your body. So it just feels like a balloon blowing up underneath you. It sort of lifts you up and sort of gives you support."

Other users compare the "alter-g" to an underwater workout which is also a technique used in physical therapy and rehab.