Researchers tracked more than 150 twin sisters from 43 to 73-years-old and have established a relationship between leg strength and reduced cognitive decline.
Lead researcher Dr Claire Steves said: "When it came to cognitive ageing, leg strength was the strongest factor that had an impact in our study.
"We think leg strength is a marker of the kind of physical activity that is good for your brain."
Read more on the story here:
http://www.bbc.co.uk/news/health-34764693
