I've been seeing a LOT of tight psoas muscles lately! This muscle attaches to your lower spine and to your thigh bone. If it's tight (sitting too much?) it pulls your lower back. It's ONE of the common causes of lower back pain! If you can stretch this regularly then your lower back may feel a lot better! (makes your tummy look a bit flatter too.) ;)
"In my life I see no difference between making pots, cooking and growing vegetables. They are all so related. However, there is a need for me to work in clay. It is so gratifying and I get so much joy from it, and it gives me many answers in my life." Toshiko Takaezu (June 17, 1922 – March 9, 2011)
To roll out your Psoas, lie face down on the ground with a ball on some books. Place the ball on the books in your abs above your hip to one side of your belly button. Relax over the ball and lie face down on the ground. Breathe.