Definitely don't let him overdo it. If he's a charge-ahead type guy, he will be ready before his foot is.
I have one like that - show her a duck and she forgets all about any aches and pains. She's a little nutz . . .
he really loves to be outside and walk or run with my 4wheeler.
He is inside now asleep here next to me on his pillow. Will keep him inside the rest of the day.