"Even if you ate more this Thanksgiving than you ever have in a single day in your entire life, the likelihood of you gaining more than a pound -- or even that -- would be unlikely," Scott Kahan, director of the National Center for Weight and Wellness, previously told HuffPost. "Worst case scenario, you really haven't done much damage when it comes down to it. You haven't ruined your whole health and weight path."
So go on and pass the mashed potatoes. Happy Thanksgiving!