Jumping workouts may be key to thwart the risk of cartilage damage and boost bone strength in astronauts during long space missions, claimed an animal study on Thursday.  

The findings, although in mice, comes even as Indian-origin NASA astronaut Sunita Williams is stranded in space since June last year. Williams along with colleague Butch Willmore are stuck in space due to technical problems with Boeing's Starliner which took them to the International Space Station (ISS).