In a separate interview, taped Friday and released Sunday, the 50-year-old president said the food and unfamiliar mattresses are downsides of the campaign trail.
"When you're on the road, you end up eating a lot of stuff that tastes really good at the time but later on in the day can catch up with you, and I'm now getting to the age where being in my own bed as opposed to some other bed, is not always great for my back," he told WJLA-TV in Washington.
Obama also revealed, when asked what voters don't know about him, that he "can cook a really mean chili," though his wife will claim that "I haven't cooked it for about 10 years, so I really shouldn't get too much credit for it."
And one more: "I'm a surprisingly good pool player, so if you ever see me in a pool hall, don't just think that you can ..."
"Don't walk up and throw down money is what you're saying?" interviewer Scott Thurman asked.
"That's what I'm saying," the president said. "I might end up cleaning your clock. That's a possibility."
The president also described himself as "a pretty good doodler" of faces, people and other things.
"Sometimes when I'm in a big important international meeting and you see me writings stuff down it might be that I'm just drawing some folks," he said.
Intellpuke: You can read this Associated Press article, filed from Washington, D.C., in context here: www.guardian.co.uk/world/feedarticle/10337662