I was hyperactive as a child, but I only remember 4 occasions when my behaviour would have been seen as annoying or dangerous. Cracking my skull on the fireplace, after spinning, was a bit much. The rest of the time, I was just full of beans and dancing, running or jumping. These days, not so much, but caffeine really affects me. I've just had a cafe mexicana (espresso with hot chocolate), my pulse is racing and I feel a little bit high. My daughter is hyperactive at times, but with her it can be a problem. We can be in a car park, I'm sure she's fogotten about safety and I'm struggling to hold her hand.