Can't keep a good boy down

Since Evan's surgery I have found him in a tree, on the trampoline, and doing the monkeybars. Arghh!! How are you supposed to keep an energetic 7 year old from doing these things just because he has a broken foot with pins in it? He doesn't get it. As long as he can move (aka run) he thinks it's fine. So I hope that fiberglass cast is as tough as Evan!!