I think sore is just a nice way of saying he is out of shape.
I guess running your mouth isn’t a form of exercise.
Santonio Holmes didn’t participate in anything more than “extended warmups” today with the strength and conditioning coach due to “a lot of soreness in the body” from “a lot of running,” he said. He offered no specific injury. “It takes a few days to get adjusted to being back in camp and wearing shoulder pads and getting back in football shape,” said Holmes, who didn’t put a timetable on when he would return full go to practice.