As well as improved cognitive control, it’s clear that walking confers many, many other benefits. We all know that it is good for our heart. But walking is also beneficial for the rest of our body. Walking helps protect and repair organs that have been subject to stresses and strains. It is good for the gut, assisting the passage of food through the intestines.7 Regular walking also acts as a brake on the ageing of our brains, and can, in an important sense, reverse it. Recent experiments asked