Head size and hanging?
If you hang so that your head is fully full of blood, and you hang only for 10 minutes per time, do you think it might affect head size? I mean if you keep the head rock hard. The weight would be like pulling your head and not let go, it would only go bigger. I did this for 2 minutes with a 3 pound weight. I had to stop because I didnt have time but I will try some more later..