It seems that in the last year or so my body is healing much slower than it used to. An abrasion on my forearm took over two months to heal completely, whereas previously it may have taken not much more than a week. I am 56 years old and in excellent health. No smoking and regular exercise. Not overweight. My muscle tone is excellent. I am active and work fulltime. I cut firewood and work outside. I am a blackbelt in karate and an instructor in said. I also have leg pain and knee pain, not in the joint, but it seems muscular. Thanks, I know it is alot.