Broaden the shoulder blades in Adho Mukha Svanasana

After class tonight someone asked me what I meant by broadening the tops of the shoulder blades apart. Here's a vid to illustrate the action and how it frees the neck. If you don't have a stellar adjustment from Chris Roberti to help you, try energetically pulling the hands apart on your mat. Ignore my hyperextended elbows and splayed pinkies, please.