There is a benefit of re-listening to certain audiobooks, lectures or podcasts. If there was a sophisticated way to just have content on-repeat, that would be cool. New content all the time is over-consumption, while repeating could be used for learning.

Also if walking alone, people should try calling friends and family. It's a great way to reconnect and stay connected with friends. Handsfree, heads up, it's good fun. I also feel much more chatty when on a walk.

Anyway, walking commutes are the best.