When you next have an office meeting – do it standing up. People with disabilities and minute takers can, of course, be seated if necessary.
Standing for meetings helps concentrate the mind and makes sure that people don’t talk for too long (with too many papers). If a meeting becomes longer than it is comfortable to stand, take a 15 minute break (to sit down) or reconvene the meeting at a later date.
Easyjet have their meetings standing up, and it doesn’t seem to have done them any harm.