Sources: Dennis Allen’s recent mishandling of Kendre Miller’s injury created internal frustration, Miller currently healthy but can’t play

Wouldn't an NFL player have enough sense to warm up without having to be told? They aren't school kids. I guess it falls under the heading of being undisciplined and a coaching staff that allows it, not just the head coach but everyone of them involved on practice days.
People only do what you expect them to do. Warm ups aren't that fun to begin with. How different was a guy like Drew Brees and his pre-practice, pre-game routine. Just like any other job, I know they get paid a lot more, but people need to be told what to do, what is expected of them.