Indianapolis quarterback Peyton Manning took another positive step forward in his recovery from neck surgery on Friday, conducting an aggressive throwing session in his Colts helmet, shoulder pads and jersey at Duke University, a source at the workout told ESPN. Manning can be seen in a video clip posted late Friday on YouTube, independently verified as authentic, making apparent encouraging progress in his recovery from the surgery that sidelined him for the 2011 season. The session comes as a deadline approaches for the Colts' decision to exercise a $28 million option on March 8. Read more: http://espn.go.com/nfl/story/_/id/7...peyton-manning-throws-duke-university-workout
