The season-ending injuries to the Warriors Kevin Durant and Klay Thompson are vivid reminders of how many NBA players are going down. These players are competing at such a high level of athleticism, and for such a long season, that the toll is obvious. I have only been writing for CelticsLife for two years, but I have spent more than a quarter-century as a Personal Trainer/Health Coach with a specialty in Sports Conditioning. I have learned much and continue to do so. Here are some thoughts.