Everyone loves an inspirational story. In late 2008, Ben Davis's grandmother asked if her was happy. Being morbidly obese and depressed, Davis made a promise to his grandmother to get back in shape and find happiness. The Ben Does Life blog was started, and by Sept. 2010, Davis had lost 120 lbs. and completed his first marathon. Today, he has run seven marathons and completed two Ironmans.

Watch Davis's journey to get in shape below.