My baby opens and closes his hands while moving them in circular motion. He does this a lot when he gets excited or when happy. Its not flapping, he moves them in circular motion while opening and closing them. I did notice that he always has to be grabbing something with his hands it could be his ears his hair a pillow whatever he can grab into and try to squeeze and also does that when he is falling asleep always grabbing something. He also opens his mouth when excited when he sees a cartoon he likes or a toy that gets him excited but its the same circular motion in hands while opening and closing. He likes to shake toys sometimes as well. Should I be worried? He is about to turn 8 months.