Walking is the best possible exercise. Habituate yourself to walk very far.

The radical power of ordinary walking

There's something almost radical about Jefferson's simplicity here, especially now. We live in an era of optimization obsession—apps tracking our steps, algorithms recommending the "perfect" workout intensity, fitness influencers selling complicated routines. Yet walking, the thing humans have done for millennia, remains quietly superior. Not because it's flashy or burns calories in some dramatic fashion, but because it actually works and you'll actually do it.

The second part—"habituate yourself"—is where the real insight lives. Jefferson wasn't talking about heroic weekend hikes or forcing yourself into misery. He was describing the practice of making walking so ordinary, so woven into your day, that it stops feeling like exercise at all. This matters because we're living through a movement crisis disguised as convenience. We don't need another thing to add to our routine. We need to reclaim the movement that's already embedded in living—walking to think, to get somewhere, to be alone, to notice the world changing season by season.

What makes this advice endure is that it works on multiple levels at once: your body benefits, your mind clears, and you cost yourself nothing. The catch is the word "habituate." It only works if you actually do it.