There are many upper body stretches that can be done. Here are a few examples:
1. Reach up and touch your fingertips to the ceiling, then slowly lower yourself down as you inhale deeply.
2. Stand with your feet together, arms at your sides, and bend over so that your head is below your knees. Hold this position for 10 seconds before standing back up again.
3. Extend one arm in front of you while bending the other arm behind you