The breathing technique is used to help switch off your parasympathetic nervous system and normal stress response of an increased heart and respiration rate. It is simple, quick, uses no equipment and can be done anywhere making it the ultimate stress hack. Use it when you are feeling overwhelmed, stressed out or out of control to help bring you back to homeostasis and help you recenter yourself.
Arizona Center for Integrative Center. 4-7-8 Breath Relaxation Exercise. https://www.cordem.org/globalassets/files/academic-assembly/2017-aa/handouts/day-three/biofeedback-exercises-for-stress-2—fernances-j.pdf