My sister does this, using 'biofeedback'. She has some health issues, and when she's hooked up to the monitors, she'll play a game of controlling her different

My sister does this, using 'biofeedback'. She has some health issues, and when she's hooked up to the monitors, she'll play a game of controlling her different monitors. She also uses biofeedback to manage pain and some other health issues when meds don't work.