Deep Breathing for Health and Posture: Benefits and How to Do It

You take about 20,000 breaths a day, usually without thinking about it. But how you breathe can affect how you feel. Many people fall into a habit of shallow, rapid breathing from the chest, especially when they’re stressed or sitting for long periods.

Deep breathing, also called diaphragmatic or belly breathing, is a simple way to change that. Research shows that slow, deep breathing can help calm your nervous system, ease stress and anxiety, and may modestly lower blood pressure. It’s also a foundation of many meditation and mindfulness practices.

Below, you’ll learn how breathing works, how posture affects it, how to tell if you’re a shallow breather, and easy exercises to help you breathe more deeply.

How Breathing Works

Your lungs don’t have muscles of their own. Instead, several muscles work together to move air in and out.

• The diaphragm is the main breathing muscle. It’s a dome-shaped sheet of muscle that sits beneath your lungs, at the base of your rib cage. When you inhale, it contracts and flattens downward, creating more space in your chest so your lungs can fill with air. Your belly gently rises as a result. When you exhale, the diaphragm relaxes back into its dome shape.
• The intercostal muscles, located between your ribs, help lift and expand your rib cage as you breathe in.
• Accessory muscles in your neck and around your collarbone, such as the scalenes and sternocleidomastoid, help when you need extra air, like during hard exercise. They also take over more of the work when breathing is shallow or difficult.

In relaxed, efficient breathing, the diaphragm does most of the work. When the neck and chest muscles take over during everyday breathing, it tends to be shallower and less efficient, and those muscles can become tight and tired.

Benefits of Deep Breathing

Slow, deep breathing activates the parasympathetic nervous system, the “rest and digest” side of your nervous system that counteracts the stress response. Research suggests it can:

• Reduce stress and anxiety: Slowing your breath can help you feel calmer and more in control.
• Lower your heart rate: Deep breathing helps slow a racing heart during stressful moments.
• Help lower blood pressure: Regular slow-breathing practice may produce modest reductions in blood pressure, although it doesn’t replace medication or other treatments your doctor recommends.
• Improve focus and relaxation: Deep breathing is a core part of meditation, yoga, and mindfulness practices.
• Support better sleep: Breathing exercises at bedtime can help you wind down.
• Make breathing more efficient: Using your diaphragm well can help reduce strain on your neck and shoulder muscles.

What Affects Your Breathing Rate?

A normal breathing rate for a healthy adult at rest is about 12 to 20 breaths per minute. Your rate can change based on your age, fitness level, weight, activity, and overall health. Several common factors can push you toward faster, shallower breathing:

• Stress and strong emotions: Anxiety, fear, and anger trigger the “fight or flight” response, which speeds up your breathing and heart rate.
• Pain: Sudden or chronic pain can also activate your stress response and change how you breathe.
• Poor posture: Slouching limits how much your chest and belly can expand.
• A sedentary lifestyle: Low fitness levels can make you more likely to become short of breath with activity.
• Health conditions: Asthma, chronic obstructive pulmonary disease (COPD), heart disease, and other conditions can affect breathing.

How Posture Affects Your Breathing

Posture and breathing are closely linked. When you sit hunched over a desk or phone for long periods, your shoulders round forward, your head juts out, and your chest muscles tighten. This position squeezes your rib cage and belly, making it harder for your diaphragm to move fully.

As a result, you may start relying more on the accessory muscles in your neck and shoulders to breathe. Over time, these muscles can become tight and overworked, which may contribute to neck and shoulder tension and make it even harder to sit up straight. It can become a cycle: poor posture leads to shallow breathing, and shallow breathing reinforces poor posture.

The good news is that this can improve. Sitting or standing tall with your shoulders relaxed gives your diaphragm room to move. Regular exercise, stretching your chest and shoulders, and strengthening your upper back and core can also help.

Quick posture tips for better breathing:

• Sit with your feet flat on the floor and your back supported.
• Raise your screen to eye level so you don’t look down for long periods.
• Relax your shoulders down and away from your ears.
• Get up and move for a few minutes every 30 to 60 minutes.

Are You a Shallow Breather? A Simple Test

1. Sit up straight or lie on your back with your knees bent.
2. Place one hand on your upper chest and the other on your belly, just below your rib cage.
3. Breathe normally for a few breaths and notice which hand moves more.

If the hand on your belly rises and falls more than the hand on your chest, you’re using your diaphragm well. If your chest hand moves more, or your shoulders rise as you inhale, you’re likely breathing mostly from your chest. The exercises below can help.

Deep Breathing Exercises to Try

Practice in a quiet, comfortable place. Start with 5 minutes once or twice a day, and gradually build up to 10 minutes or more. If you feel dizzy or lightheaded at any point, stop and return to normal breathing.

1. Diaphragmatic (Belly) Breathing

1. Lie on your back with your knees bent, or sit comfortably with your back straight.
2. Place one hand on your chest and the other on your belly.
3. Breathe in slowly through your nose for about 4 seconds, letting your belly rise against your hand. Your chest should stay relatively still.
4. Exhale slowly through your mouth or nose for about 4 to 6 seconds, letting your belly fall.
5. Repeat for 5 to 10 minutes.

2. Equal Breathing

This simple technique helps you slow and steady your breath.

1. Sit comfortably and close your eyes if you’d like.
2. Inhale gently through your nose for a count of 4.
3. Exhale gently through your nose for a count of 4. Keep the breath smooth and relaxed rather than forced.
4. Continue for a few minutes. As it gets easier, you can lengthen each breath to a count of 5 or 6.

3. Roll Breathing

Roll breathing helps you use your full lung capacity by filling the lower lungs first, then the upper lungs.

1. Lie on your back with your knees bent. Place your left hand on your belly and your right hand on your chest.
2. Breathe in slowly so your left hand (belly) rises first while your right hand stays still.
3. Once your lower lungs feel full, continue inhaling so your right hand (chest) rises as well.
4. Exhale slowly through your mouth, letting first your chest and then your belly fall.
5. Repeat for 3 to 5 minutes.

4. Pursed-Lip Breathing

This technique slows your breathing and is often recommended for people with COPD or anyone who feels short of breath during activity.

1. Breathe in slowly through your nose for about 2 seconds.
2. Pucker your lips as if you’re about to whistle.
3. Breathe out slowly and gently through your pursed lips for about 4 seconds.

Breathing During Exercise

Steady breathing can help you stay relaxed and keep a comfortable rhythm during workouts. During strength training, exhale during the effort (such as when you lift a weight or push up) and inhale as you return to the starting position. Avoid holding your breath while lifting, since this can cause a sharp spike in blood pressure. For more tips on preparing for a workout, see our guide to the pre-gym warm-up.

Tools for People With Breathing Conditions

If you have a lung condition, are recovering from surgery, or have a neuromuscular condition, your doctor or respiratory therapist may recommend a breathing device. Common examples include:

• Incentive spirometers: Handheld devices that encourage slow, deep breaths, often used after surgery to help keep the lungs fully expanded.
• Inspiratory muscle trainers: Devices that add resistance to breathing in, helping strengthen the breathing muscles.

Use these devices only as directed by your health care provider.

When to See a Doctor

Breathing exercises are safe for most people, but they aren’t a substitute for medical care. Talk with your doctor if you often feel short of breath, breathe rapidly at rest, or have a lung or heart condition. Seek emergency care right away if you have sudden or severe shortness of breath, chest pain, bluish lips or fingertips, or trouble speaking because you can’t catch your breath.

Frequently Asked Questions

What is diaphragmatic breathing?

Diaphragmatic breathing, also called belly breathing, is a technique that uses your diaphragm, the main breathing muscle beneath your lungs, to take slow, deep breaths. When you do it correctly, your belly rises as you inhale while your chest stays relatively still.

How often should I practice deep breathing?

Start with about 5 minutes once or twice a day, and gradually increase to 10 minutes or more. You can also use a few deep breaths anytime you feel stressed.

Can deep breathing lower blood pressure?

Regular slow-breathing practice may modestly lower blood pressure, and it can help reduce stress. However, it doesn’t replace medication or other treatments your doctor recommends.

Can bad posture cause shallow breathing?

Yes. Slouching compresses your chest and belly, which limits how much your diaphragm can move. This can lead you to rely more on your neck and shoulder muscles to breathe. Sitting up straight gives your lungs and diaphragm more room.

Why do I feel dizzy when I do breathing exercises?

Breathing too fast or too deeply can lower carbon dioxide levels in your blood, causing lightheadedness. Slow down, breathe more gently, and return to normal breathing until the feeling passes.

The Bottom Line

Many people breathe shallowly from the chest, especially when stressed or sitting for long periods. Deep diaphragmatic breathing is a simple, free tool that can help calm your nervous system, ease stress, and make breathing more efficient. Pair a few minutes of breathing practice each day with good posture and regular exercise, and talk with your doctor if you have ongoing breathing problems.

References

1. Zaccaro A, Piarulli A, Laurino M, et al. How Breath-Control Can Change Your Life: A Systematic Review on Psycho-Physiological Correlates of Slow Breathing. Frontiers in Human Neuroscience, 2018;12:353.
2. Harvard Health Publishing. Relaxation Techniques: Breath Control Helps Quell Errant Stress Response.
3. Cleveland Clinic. Diaphragmatic Breathing.
4. Cleveland Clinic. Vital Signs.