A nurse is teaching a client who has migraine headaches how to use biofeedback to reduce the need for pharmacological interventions. Which of the fallowing information should the nurse include in the teaching?

"Biofeedback requires concentration to control physiological responses."

“Biofeedback improves energy flow through soft tissue manipulation to increase circulation."

"Biofeedback uses herbs to reduce inflammation"

“Biofeedback stimulates certain pressure points to relax muscles"