Kyle Long has a warning for anybody playing football in a Philadelphia Eagles uniform this year.

Hit the bike machine. Hit the treadmill. Hit the elliptical.

Because you better be in shape.

“You just need to be able to run past the point of exhaustion,” said Long, who played for Chip Kelly at Oregon. “You need to be in good cardio shape. A big emphasis on that offense’s tempo. That became very evident the first day I showed up at fall camp, I thought I was going to die.”

Long, projected as a second-round offensive tackle in this year’s draft, met with the media at the NFL Scouting Combine and said he and his teammates eventually got into good enough shape to run Kelly’s superhumanly-paced offense effectively.

But it took a while.

“You get used to the tempo,” he said. “You notice when the guy across from you tongue’s dragging. You’re ready to go and next man up.”

Long, son of Hall of Famer Howie Long, brother of Rams defensive end Chris Long, started out at Florida State as a baseball player – his fastball was recorded at 96 miles per hour and he was drafted by the White Sox. But he left soon after a DUI arrest four years ago.

He resurfaced at Saddleback Community College in Mission Viejo, Calif., where he revived his football career as a defensive lineman and earned a scholarship at Oregon, where Kelly moved him to offense.