If you’ve ever doubted whether human beings are designed for walking, all you have to do is strap a fussy baby into a BabyBjörn and take them out for a stroll. The crying stops. With each step, the resistance and the kicking and the screaming fades away. It’s almost as if they enter a trance. Hours can pass and, if you’re moving, whether they’re an infant strapped to your chest or a toddler in a stroller, even an ordinarily troublesome child turns into a dream. We evolved this way. To travel by foot, to explore, to cover distances both short and long, slowly and steadily. Which is why my point here really has nothing to do with childcare. Taking a walk works on a racing or miserable mind just as well as a colicky baby. We are an ambulatory species and often the best way to find stillness—in our hearts and in our heads—is to get up and out on our feet. To get moving. To take a damn walk.