Here is a short flow sequence I use to warm-up the upper body at beginning of classes. It gently stretches the upper back, shoulders, neck and chest. It also helps to draw energy and circulation into these area, and brings focus into the body and breath.
If you find yourself sitting at a computer for long periods, this sequence is great as a tension reliever for the upper body during your workday. Simply sit at the edge of a stable chair, and move through the sequence 5 to 8 cycles.