I am not sure if I am just being paranoid but I feel like the knee that was operated two years ago is having some cracking sound. I feel that any time soon the operation will be operated again. haha. I guess, I am lacking calcium. Every time I exercise I feel some pain in that knee area. There was a time when I was looking at different Dorfman Pacific Hats at was sitting on the chair I felt the twinge of pain. I am praying that this does not mean anything. I am quite contented right now with my condition and I hope it stays the same.