What It TakesBy: Mark Herzlich In 2011, he became starting linebacker for the New York Giants and triumphed in the Super Bowlafter being told his cancer diagnosis meant he would never play football again. As a child, Herzlich found true meaning in football, eventually turning his passion into a first team All American spot at Boston College. But the budding star was sidelined by persistent, debilitating pain in his left leg. The shocking diagnosis: He had Ewings