startling baby

Alena

So my son is 1 year old and h3 lov3s peek a boo. He loves when I hide behind things and pop out and scare him he screams at the top of his lungs and laughs and keeps coming back for more. I know he likes it but I was wondering if it's ok to do that with him. I don't want to permantly scare him like make him jumpy or startle easily. is it ok to play with him like that? I know it's a silly question but I've been thinking about this a few days now. He us turning 1 tomorrow but we've been playing this game for months. was he too young to play this game with before 1 year old?