Summer means food. You'll be out there grilling, eating pier fries at Old Orchard Beach, enjoying the summer beers, ales and hard teas and lemonades. That translates to gaining weight. I found an article on Thrillist.com, where they ranked the fifty states on 'How much fun is it to get fat there?'
The food that each state are known for is important, but there is more to consider. The weather, the culture... basically the extent to which you can completely lose yourself in the pursuit of gluttony, as is your right!
So enjoy, America, and keep eating!