91Èȱ¬

Dr Claire Steves, a practicing geriatrician tells Justin Webb that new data shows that exercise not only helps to keep over 50s fit but also helps "thinking, learning and memory."

Diana Moran, formerly known as The Green Goddess on 91Èȱ¬ Breakfast from 1983 – 1987, puts Justin Webb's and Nick Robinson's fitness to the test.

(Image: Diana Moran. Credit: 91Èȱ¬)