The Democratic presidential nominee is trying to kick his smoking habit while running for president, and he says it hasn't been easy. "There have been a couple of times during the campaign when I fell off the wagon and bummed one, and I had to kick it again," Obama tells "Men's Health." "But I figure, seeing as I'm running for president, I need to cut myself a little slack." Obama, 47, has this recommendation for hopeful quitters: Eliminate "certain key connections - that first cigarette in the morning, or after a meal, or with a drink," he says. Obama fits in 45-minute workouts, six days a week. "I lift one day, do cardio the next," he says, but wishes his exercise sessions were longer, saying the need for sleep often overshadows the gym. "I wish I was getting a 90-minute workout. Most of my workouts have to come before my day starts," he says. "There's always a trade-off between sleep and working out."

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