RB McGahee no stranger to team's offseason workouts

The Broncos' three days of work this week are mandatory. Their work the three previous weeks wasn't.  Yet RB Willis McGahee was a regular participant, which he said was a change. "I've been here and participating a lot more than I have in my whole career," he said.  The biggest reason for his change? QB Peyton Manning. "That has a lot to do with it," McGahee said.