“About five years ago ... I have two daughters and they were 4 and 6 at the time. I couldn’t pick them up,” he said, shaking his head. “And every morning when I would wake up, I would put my feet on the floor and my feet would hurt. It was a painful experience just walking to the bathroom every morning.”Clay Davis has led an active life. The Brunswick resident has always challenged himself, whether it’s competing in athletics in college or participating in triathlons or 5K’s as an adult.…