If you find yourself sitting for long periods of the day, it is very possible that you will find your shoulders and upper back becoming tighter and stiffer. This is usually due to being in that hunched position for hour after hour.
Here is a series of videos showing some simple exercises we can all do to help mobilise the upper back and shoulders. Some are things you can do at your desk, some are things you can do before, during or after your workouts. And all are worth giving a go!