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

"Biofeedback stimulates certain pressure points to relax muscles."

"Biofeedback uses herbs to reduce inflammation."

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

"Biofeedback requires concentration to control physiological responses."