ANN ARBOR, Mich. -- When Michigan running back Blake Corum went outside as a kid, he never wore shoes.
Barefoot Blake would grab charcoal briquettes from the family grill, mix them in a bowl of water and then paint on trees in and around Marshall, Virginia, his one stoplight hometown, about 50 miles west of Washington, D.C. He loved building things, mostly forts and teepees. His parents, James and Christina, didn't worry about their son's screen time.
"I was never inside," Corum said. "There's nothing much there but to use your imagination. It's quiet.