I have sprained my knee and wrist because I played basketball and grazed myself. I have strained tendon once it was painful. I sometimes have stomachache and getten a cold but I have never had flu or another serious disease. Sometimes I have problems sleeping and I do occaionally feel inder the weather. To keep healthy, I go to the gym and have a special diet. In my opinion, the most dangerous diseases in my ounrty are probably AIDS and strokes.