They haven't had a nap during the day? Dd (3.2) doesn't nap when she's at nursery all day or most days at home. Which is great because she goes straight to sleep at bedtime. But if she doesn't nap when she's at home, from about 3pm she goes mega hyper right until bedtime at 7. She starts being a bit naughty and silly and is just non-stop. It's driving me a bit nuts today! Anyone else?