Barack Obama says he wishes he had more time for staying fit. And the Democratic presidential candidate admits that he still occasionally smokes a cigarette. His wife, Michelle, pressured him to quit, he says.

Obama's comments to the magazine Men's Health were part of an interview for its November issue. Obama says most of his workouts have to be done early in the morning before he starts his day.

"There's always a trade-off between sleep and working out."

If he had the time, Obama said, he would spend 90 minutes working out. "Usually I get in about 45 minutes, six days a week. I'll lift one day, do cardio the next."