my back

idk if because of the way I sit when I'm knitting or if I spent too much time on the floor with the kids or maybe it's my shoes but my back is killing me. So last night when I got home I did some yoga poses, a guy on the Ellen show earlier that day said were good for stretching your back. I did child's pose, then cat stretch, back to child's cat one more time and finished with a downward dog. It all took about 10 minutes and I feel great. I didn't even take any aspirin!