Waking up with a headache or a sore jaw are major signs of teeth grinding. Over 10% of all adults grind their teeth while sleeping and all cases are stress related. Not only does it affect your teeth, you can also develop a condition called Bruxism. Wearing a light, comfortable and barely noticeable night guard for your teeth makes all the difference in the world. Sports guards are mandatory in all physical combat sports. During your training, matches or games you must protect your teeth in order to prevent any possible damage during contact.