Garfield
The English colonists we call Pilgrims
celebrated days of thanksgiving as part of their religion. But these
were days of prayer, not days of feasting.

Our national holiday really stems from the feast
                    held in the autumn of 1621 by the Pilgrims and the Wampanoag
                    to celebrate the colony’s first successful harvest.

And here I thought it was all about eating too much, watching (playing?) football, taking a nap and a fat cat filled with helium.