(Photo - Lenore Meuse)
What else would someone want to be doing on a Saturday morning !!!!!
Inversion poses are excellent to improve circulation.
I've talked in this post about Ayurveda. It considers that many of the body's impurities are in the lower abdomen. When we raise our feet above the head, gravity is assisting us to move these impurities towards what the Ayurvedic system calls agni, or 'fire'. Agni particularly relates to our 'digestive fire', and is thus located above our lower abdomen.
So, by being upside down, and by using the deep and slow breathing typical of yoga, we help 'burn off' the impurities that were previously stuck.
To be honest with you, I do it for all those reasons but sometimes I just love seeing the world upside-down.