David Roll was overweight and out of shape on the eve of his 40th birthday . He 's encouraging everyone , especially middle-aged fathers , to improve their diet , fitness and long-term health . Roll struggled to get fit , and within months , he competed in a grueling marathon . The father of Roll says he wants to be an example to others facing life 's challenges .
David Roll was overweight and out of shape on the eve of his 40th birthday . Roll struggled to get fit , and within months , he competed in a grueling marathon . The father of Roll says he wants to be an example to others facing life 's challenges .