During my senior year of college I had a swimming class instructor (who was in his 80s and in amazing physical shape) that touted Lysine tablets almost every class. His theory was that 500 mg a day would do wonders for most athletes. He said most of us didn't get enough through our diet.
I have done some Google searching and it sounds like there may be some truth to this. Supposedly helps with rebuilding muscle tissue and recovery. Thoughts? Experiences?