[The corner of Sam's lips quirks into an uneven smile.]

You know, walking is a good way to clear your mind. Get some exercise.

... Especially since the town's not even that big.

[Is he teasing? He's teasing. Just a bit. And he also takes another bite of his food, apparently warmed up to the idea of eating most of it. When it's your brother making it and not sad convenience store food you'd bought between motels while you're running from your problems, it turns out you don't mind eating as much.]