Waiting in Line
It's become reflexive to pull out your phone and scroll during downtime, but use this time to let your mind wander. It's also the ideal time to get in a few stretches. These feel great and we found they also keep people from standing too close behind you.
Try It
Stand up straight. Bring your hands behind you and join your palms. Press your arms straight back and hold for 10 seconds. Release and repeat three times.