The ArmourBite® Mouthguard from Under armour is your new game-time essential. When you compete, your natural response is to clench your jaw and grit your teeth. But all that gnashing triggers the release of cortisol—a performance-sapping hormone that causes excess fatigue, stress, and loss of concentration. Not the best formula for success. The ArmourBite® Mouthguard not only protects you from earth-shaking hits, it also reduces those nasty clenching side effects by pivoting your jaw to the optimal positioning with its patented ArmourBite® Power Wedges™. The result is a marked increase in strength, endurance, and reaction time. More info at UnderArmour.com.