After running most of my life I am gutted that I have only just found out about creatine and carbo power. I wish I had found out earlier as I am having really great results on both, the creatine is helping my endurance and stamina and the glucosamine really, and I mean really helps with the aching old knees. Who would have thought that sports supplements could make so much difference to an old mans running regime. Do not wait until its too late, talk to your personal trainer or call on of the many companies you see advertised on the web selling sports supplements.