For Christian McCaffrey, sleep is serious business

Darin Gantt

SPARTANBURG - Christian McCaffrey did not become one of the best running backs in the NFL accidentally.

Everything he does to prepare for a season is carefully planned - from the weights he lifts, to his running workouts, to the food he puts in his body, to the way he studies. His daily routine is enough to exhaust anyone.

But because it's Christian McCaffrey, the work doesn't stop when h