We are so wired to be going all the time these days.
It is funny that you mention this, as today I was trying to fight that feeling in me actively. Harder than I thought it would be.
I think that it would be okay for Americans here. We have seen a few around and they seem to be having a good time. There is a difference between not liking America and not liking Americans :)
It also seems many people can't separate the two though. I am usually pretty good about unwinding when the time is right. My wife on the other hand has a hard time letting herself just be still. Even when she takes a nap she feels guilty after the fact.