Peyton Manning's return to NFL excellence is nothing short of miraculous. After four neck surgeries and a year out of football, Manning returned in 2012 to post one of the greatest seasons of his career.

This Saturday morning, NFL Network will take us behind the scenes of that recovery, including some never-before seen footage of Manning's early workouts at Duke University with Blue Devils head coach David Cutcliffe. Cutcliffe was Manning's quarterback coach while at the University of Tennessee.

You can watch a preview of the feature right now over at DenverBroncos.com. Do so, it is definitely worth the time.

The feature will air on NFLN at 10AM Mile High Time.