Is it good for you to be upside down?

Question

Is the pressure in your head bad for your brain?

Or is the blood circulation good for the brian/skin?

Answer 1

It can be.  You hold yourself upside down in the yoga pose Salamba Sarvangasana and it's supposed to be good for blood circulation, lymph circulation and respiration.

http://www.myyogaonline.com/Salamba_Sarv...

It can be bad for you if you have high blood pressure and you shouldn't do it if your menstruating.