A new study supports my idea that walking and learning are connected. Normally I found it boring to study Chinese flash cards. While walking, I found it pleasant. You could say walking made me more curious. Just standing on the treadmill didn’t have this effect.
The study divided men and women in their 60’s into two groups: (a) walking for 40 minutes/day and (b) stretching. At the end of the study, for persons in the walking group, part of the hippocampus — which is associated with learning — had grown. For persons in the other group, that part of the hippocampus got smaller. Several other parts of the brain, not associated with learning, did not differ between the groups.