any sport â" from football to golf to hockey â" can capitalize on innovation that makes you stronger, faster and better. Whether you need protection in contact sports or you just want to improve your game, Under Armour Performance MouthwearTM , with ArmourBiteTM ... It's part of the âœfight or flightâ wiring of your brain. Your clenched jaw and teeth compress your temporomandibular joint (TMJ), triggering the release of excess amounts of performance-sapping hormones ...