I occasionally grind my teeth at night, enough to give me migraines the next day. A doctor suggested gum as a remedy, and it seems to work. I guess his theory w

I occasionally grind my teeth at night, enough to give me migraines the next day. A doctor suggested gum as a remedy, and it seems to work. I guess his theory was that it worked the muscles enough to 'wear them out' by the time I went to bed. Whatever the reason, it suggests that we do get some benefit from exercising our jaw beyond eating. Maybe we evolved to eat tougher stuff than the typical modern diet.