in sync

on my flight to Shanghai on monday, i awoke towards the tail-end of the flight to some bells and chimes indicating that there would be an announcement, which was this (slightly paraphrased): "After your long flight, please take a moment to stretch your body." Then on the screen, a video comes on with a full stretching routine. But the best part was the majority of the passengers actually did the stretch! SYNCHRONIZED STRETCHING ON A FLIGHT??? it rocked.