I was surprised that a pound of potato salad was equivalent to putting on only 2 ounces. I thought it would be more, although of course not 5 pounds, not more than it weighs even, but of course PF was just kidding.
I repeated the calculation for ice cream: chocolate, regular, 930 calories (fitday.com), 0.27 lbs, a bit more than a quarter pound.
I got to thinking about what it would take to gain more than a pound from eating a pound. Fat has 9 calories per gram, which is 4,082 calories per pound. You would gain about 1 pound 3 ounces if you ate a pound of fat. (It's debatable if you'd keep it down though.)
Sugar: 3.9 calories per gram, 1,755 calories per pound. You'd gain about half a pound.
100 proof vodka: 3 calories per mL (calories-in-foods.com), 2,250 calories per 750 mL bottle. Weight gain about two-thirds (0.64) of a pound. You could gain that 5 pounds from drinking 7-3/4 bottles (7.78) although of course nobody could do that in a day (unless it was their last day).
Wanna lose it with a postprandial walk? "Your weight and the distance you walk determine the energy calories burned while walking. Walking speed matters less than distance and weight. A rule of thumb is 100 calories per mile for a 180-pound person and 65 for a 120-pound person." (walking.about.com
) If a 180-pound person ate a pound of fat (4,082 calories) they'd have to walk 40 miles to work it off. An average human walks at 3 mph, so that would take about 13 hours.
It was fun researching this post and discovering real numbers, and hope you enjoyed reading it. For me it seems to prove the point that one day of excess is not likely to affect your weight much unless you do it often.