http://www.usatoday.com/news/health/...y_N.htm?csp=34
Interesting article that I think may be quite accurate.
When I go to McDonalds, I spend about $3.00 on a double cheeseburger and a small drink. I don't eat anything for hours after.
When I hit Subway/Mr. Sub, it's a footlong chicken-something with a medium or large drink, and often a bag of chips.