What Is Biofeedback? How It Works and What It Helps

Biofeedback uses sensors to show you body signals you normally cannot feel, so you can learn to change them. How it works and what the evidence supports.

Your heart rate and brain activity shift constantly, mostly without you noticing. Biofeedback puts those signals on a screen or turns them into sound in real time. Once you can see them, you can practise changing them, much as a mirror helps you correct your posture. The idea took off in the late 1960s, and today it ranges from clinical therapy to apps and headbands you can use at home.

Table of Contents

How biofeedback works

Every biofeedback session follows the same loop:

Measure: a sensor picks up a body signal, such as heart rate or muscle activity.
Show: the signal is turned into something you can follow, like a line on a screen or a tone.
Adjust: you try techniques such as slow breathing or relaxing a muscle, and watch what happens.
Learn: with practice, you find what works and can often reproduce it without the equipment.

That last step is the point. Biofeedback is a training method, not a treatment that acts on you. The device does nothing to your body; it only shows you what your body is doing.

Types of biofeedback

Type	What it measures	Common uses
Heart rate variability (HRV)	The beat-to-beat variation in your heart rhythm	Stress and anxiety, usually through slow breathing
EMG (muscle)	Electrical activity in muscles	Tension headaches, rehabilitation, pelvic floor training
Thermal	Skin temperature, usually at the fingers	Migraine and relaxation training
Electrodermal (skin response)	Tiny changes in sweat gland activity	Stress awareness
EEG (neurofeedback)	Brain wave activity	Meditation and attention training

What does the evidence say?

Biofeedback is not one treatment, so there is no single answer to whether it works. The evidence is stronger for some types and uses than others.

Stress and anxiety: HRV biofeedback

HRV biofeedback usually means breathing slowly, around six breaths a minute, while watching your heart rhythm rise and fall in time with your breath. A meta-analysis of 24 studies with 484 participants found it was linked to a large drop in self-reported stress and anxiety, and the effect held up when compared with control groups (Goessl et al., Psychological Medicine, 2017). The authors still called for more well-controlled trials.

Tension headaches: EMG biofeedback

Headache is one of the best-studied uses. A meta-analysis of 53 studies found biofeedback, mostly EMG feedback from the forehead and neck muscles, produced a medium-to-large reduction in tension-type headache that lasted through an average of 15 months of follow-up (Nestoriuc et al., Journal of Consulting and Clinical Psychology, 2008). Thermal and EMG biofeedback have also been studied for migraine, with smaller effects.

Pelvic floor problems

Biofeedback is used alongside pelvic floor exercises, for example after childbirth. In the UK, though, NICE advises against routinely adding EMG biofeedback to pelvic floor muscle training for urinary incontinence in women. A large NIHR-funded trial of 600 women found it did not improve outcomes after two years compared with supervised exercises alone (NIHR Evidence, OPAL trial). It may still be offered to women who cannot contract their pelvic floor muscles on their own.

Brain training: neurofeedback

Neurofeedback is biofeedback using EEG. It has been promoted for conditions such as ADHD, but the most rigorous analysis to date found no meaningful benefit for ADHD symptoms when the people rating them did not know who had received it (Westwood et al., JAMA Psychiatry, 2025). For everyday goals such as relaxation and building a meditation habit, it is a reasonable tool. Our guide to home neurofeedback devices covers the options and the research in more detail, and our neuroplasticity guide explains what brain training can and cannot change.

Biofeedback vs neurofeedback

Neurofeedback is a type of biofeedback. The difference is the signal:

Biofeedback is the umbrella term, and usually refers to body signals such as heart rhythm or muscle tension.
Neurofeedback uses EEG to feed back your brain activity specifically.

Many home devices now combine the two. The Muse headband, for example, gives feedback on brain activity during meditation and also offers heart and breath sessions.

Can you do biofeedback at home?

Yes, and for stress and relaxation it is one of the easier techniques to try. Home options include:

HRV breathing apps used with a chest strap or a finger sensor, which pace your breathing and show your heart rhythm.
EEG headbands such as Muse, which turn your brain activity into sound while you meditate, so you hear when your mind wanders.

For medical problems such as incontinence or chronic pain, see your GP first. Clinical biofeedback is usually delivered by a physiotherapist or psychologist as part of a wider treatment plan. You can compare home EEG devices in our guide to the best EEG headsets in the UK.

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Our Muse headband UK guide compares the Muse models in detail.

Is biofeedback safe?

Biofeedback is non-invasive. The sensors only record, and nothing is sent into the body. The main risks are indirect: relying on it instead of getting a proper diagnosis, or spending money on claims that go beyond the evidence. Be wary of any provider promising to cure a condition through biofeedback alone.

Biofeedback FAQ

What is biofeedback in simple terms?

A way of learning to control body processes, such as heart rate or muscle tension, by watching them on a screen or hearing them as sound in real time.

What is biofeedback used for?

Mostly stress relief and headache treatment. It is also used in pelvic floor training, and EEG neurofeedback is used for meditation.

Is neurofeedback the same as biofeedback?

Neurofeedback is a type of biofeedback that uses brain activity, measured with EEG, as the signal.

Does biofeedback really work?

It depends on the use. There is good evidence for tension-type headache and promising evidence for stress and anxiety. For other conditions, the evidence is weaker or mixed.

Is biofeedback available on the NHS?

Some NHS services offer it, mainly through physiotherapy or specialist clinics for specific problems such as pelvic floor or bowel conditions. Availability varies, so ask your GP.

How long does biofeedback take to work?

Clinical programmes usually involve several sessions over a few weeks, plus practice at home. Simple relaxation techniques, like slow breathing, can show an effect on the screen within minutes.

About this guide

eeg.org.uk has covered biofeedback and neurofeedback devices since 2021. This page is based on peer-reviewed meta-analyses and UK guidance, linked below. It is general information, not medical advice. We may earn a commission when you buy through some of our links, such as Muse and Amazon, at no extra cost to you. See our affiliate disclosure, or read more about eeg.org.uk.