It's been a rough couple of days here in DenaLand. On Thursday, during the last 10 minutes of what had been an enjoyable yoga class, something snapped in my lower back. We were sitting on the floor in a simple head to knee pose when I felt the give. 

The pain was so severe and immediate I gave an involuntary yelp. 

"Uh-oh," said my instructor, reading the pain in my face. 

I managed to hobble down the stairs and back home where I immediately began a treatment of ice and ibuprofen.