Activity sharpens even dementia-affected brains, report suggests

Moving more and strong motor skills seem to help cognitive prowess, results show

Moving more might help to keep people's brains sharp as they age - even in the face of dementia, researchers have said.

Scientists have found older adults fared better when it came to cognitive tasks if they clocked up higher levels of daily activity on a wrist-based tracker - something the researchers said picked up everything from exercising to mundane tasks like chopping onions.