Have you ever wanted to feel weightless while you were running? Well now it's possible.
A Florida hospital is using an anti-gravity treadmill to help patients get back on their feet.
The treadmill is called the AlterG, and it uses NASA technology to create a weightless feeling.
To use it, runners or walkers put on special shorts and then step into a chamber.
The technology then creates an anti-gravity sensation - much like astronauts experience in space.
"In space, you're weightless, and one of the big concerns from an exercise perspective was weightbearing," rehab coordinator Brian Gillooly said.
He explained that was "because if you're at the space station for 90 days, and you're not bearing any weight, your bone will demineralize."
"If you're at the county fair... that's what I'd compare it to -- only you're able to bear weight," he said.
The AlterG technology can be used by anyone.
The hospital uses it for recreational runners, patients recovering from injuries, people with weight issues or osteoporosis, and professional athletes.