Before starting SierraSil, I have worn a brace for my knee for many years hoping to avoid replacement surgery. While on the verge of asking for that surgery, I started taking SierraSil. My knee has become less bowed and I'm able to compete at provincial and national level in tennis and squash without any pain. I'm also climbing Grouse Mountain weekly and regularly play a few hours a day and referee basketball for 2 ½ -3 hours at a time. SierraSil has been a factor in my improvement and I’m happy to have it as part of my health regimen. At 67, I'm working hard to maintain my level of fitness and I'm hoping it will help me get to the World Masters Games next April.