Ok, this may sound strange. My 21 month old boy loves it when he lays down on the wood floor and I spin him around. Quickly. Of course he gets dizzy and I have to stop him from falling over afterward but is all that blood rushing to his head bad for him? I can see his eyes darting around and it clearly gives him some sort of rush. It's great fun but I don't want to harm him. Can anyone help with an answer?