In this humorous, non-scientific post Americans Grow To Fit Their Environment [Alchemic Spot] the average square footage of a US house is trended against the average US obesity rate (via Seth Godin’s Blog)
The conclusion?
Larger houses influence weight increases (larger kitchen, larger refrigerator, takes longer to get outside to exercise, etc.)
Lesson learned.
If you buy a smaller house, you can fit into that outfit you could wear before the holidays.

HA! Cancel the Weight Watchers subscription, sell the big house and buy a small apartment! Look out Jay Lo!