Regular exercise can help strengthen bones, muscles, and joints, but it can also lead to some soreness. In some cases, it can even lead to injury. The same can be said about sports-related injuries; you know, when you try to pull a Lebron James during a pick-up game of hoops, only to end up doing a Rick James and superfreakin' on the ground. In a word: Ouch. In seven words: Ouch. That hurt. Get me some glucosamine.

Research in Sports Medicine published results on a recent study involving the affects of the supplement glucosamine on injured athletes. Taking around 1,500mg of the cartilage-mending supplement per day for 28 days showed promising results in study volunteers, all of which were injured at the outset of the study.

After this 28 day period, the volunteers could flex and extend their knee 10 percent farther than volunteers who did not take glucosamine.