Not everyone is in a position to be 'allowed' to decline meetings though - what if you're the PA/EA to an executive, or the project coordinator, and are required to be there to take minutes?
I've worked at client sites where they've cunningly called meetings that take place between 12-2pm 'brown bag meetings' - i.e., bring your own lunch. But actually working and eating isn't great for digestion.
One of my clients had a very strict rule - no meetings between 11:30am and 2:30pm - because they wanted their staff to take a decent break and return refreshed. They also offered yoga and massages! (Employee-paid, but they were heavily subsidised). On the very rare occasion when a meeting had to take place over that period, it was fully catered (and came out of the organiser's budget).