Rolex started without winding

[Madman37]

Hi one of my Rolex watches i swear is going after I picked it up. I haven’t worn it for ages or wound it. When I first it I got it had to wind it to get it working. But today after I held it in my hand for a little while to look at it seems to start working. I understand it’s automatic but does it start working after such limited movement eg picking it up and moving it a bit. I thought it needed much more movement then that.