​Jack Campbell is ready for the pads.More than that, the Detroit Lions linebacker is ready for the part of training camp where conditioning, accountability, and physical football stop being talking points and start showing up on the field.“Whenever the pads come on, they come on,” Campbell said. “It definitely makes things a little easier for me specifically. I’m excited. We have a great group of guys this year, and I’m excited to get into the thick of it and start colliding bodies.”That sounds exactly like Campbell. No theatrics. No hesitation. Just a linebacker waiting for football to feel like football again.Jack Campbell Wants the Lions to Become the NFL’s Most Conditioned TeamDetroit’s preparation for Week 1 is already underway, and Campbell has set an ambitious standard for the roster.“The process has already started,” Campbell said. “We’re getting ready for Week 1, and, in my opinion, we want to be the most conditioned team in the NFL. That’s what I think it takes.”Conditioning rarely receives much attention once the regular season begins. It becomes impossible to ignore when a defense begins fading during a fourth-quarter drive.Campbell does not want that happening to Detroit.The Lions want to play fast, pursue the football and remain physical deep into games. That requires more than lifting weights or running sprints during the offseason.“You’re definitely getting into football shape right now,” Campbell said. “For me, it’s difficult to practice football during the offseason because football is one explosive movement after another. You can sprint in a straight line during the offseason, but when you get out here, a lot of it is lateral, then vertical, then lateral and then vertical again. You can’t truly practice that.”Training camp gives players the movement patterns, mental stress and repeated collisions that ordinary workouts cannot duplicate.“This acclimation period is good for getting the body flowing again, getting the mind going and getting back into camp,” Campbell said. “You also start learning how different guys play. You begin recognizing that one guy is going to do one thing while another guy will react differently.”There Will Be No Excuses Against the RunCampbell’s strongest comments came while discussing Detroit’s run defense.“I hang my hat on the run game, so hopefully there won’t be an issue there,” Campbell said. “There are no excuses. That’s not something we’re going to accept this year.”That is a serious standard from the player expected to operate near the center of Detroit’s defense.Stopping the run demands discipline across the entire front. One defender loses his gap, another gets caught out of position and suddenly a short gain becomes an explosive play.Campbell does not care where a player sits on the depth chart.“You have to get your job done. If you don’t do your job, it shows up blatantly on the tape. It doesn’t matter whether you’re