If you accidently carbed up over the weekend, don't stress—#MotivationMonday is here! Our friends at MensFitness.com rounded up 12 stars who have made it through a marathon and they're inspiring us to run a mile (or 26) ourseleves. Ryan Reynolds' biceps are also inspiring us to get in Blake Lively shape for summer. Hey, if Diddy and Al Roker can run a race, so can we. Or at least we'll keep telling ourselves that.