There are some biofeedback devices re: jaw clenching/teeth grinding in particular. Both muscle innervation sensors (applied to the skin) and pressure sensors (

There are some biofeedback devices re: jaw clenching/teeth grinding in particular. Both muscle innervation sensors (applied to the skin) and pressure sensors (held between the teeth) out there. Not sure if they're actually effective but one small study with people who grind their teeth while asleep found significant reductions from a mouthguard that vibrated when a pressure threshold was exceeded: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4389117/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4389117/