Key takeaways
- Alveoli exchange oxygen and CO2.
- Elastic tissue lets lungs expand.
- Smoke and pollution harm lungs.
- Exercise supports breathing muscles.
- A persistent cough needs a check-up.
Most of us only think about our lungs when breathing becomes difficult. Understanding how they work makes it easier to look after them.
How your lungs work
The airways
Air travels through the windpipe into the bronchi and ever-smaller bronchioles, which are lined with mucus and tiny hairs (cilia) that trap and sweep out dust and germs.
The alveoli
At the end of the airways are hundreds of millions of air sacs, where oxygen passes into the blood and carbon dioxide passes out.
Elasticity and the diaphragm
The diaphragm pulls air in, and the natural elasticity of the lungs helps push it back out. With age, this elasticity and breathing-muscle strength gradually decline.
8 habits for healthy lungs
| Habit | Why it helps |
|---|---|
| Don't smoke or vape | The biggest single cause of lung damage |
| Improve indoor air | Ventilate, reduce dust and mould |
| Check outdoor air quality | Limit exertion on high-pollution days |
| Exercise regularly | Strengthens breathing muscles |
| Practise deep breathing | Uses the full lung capacity |
| Stay hydrated | Keeps mucus thin |
| Stay up to date on vaccines | Flu and pneumonia protection |
| Good posture | Gives the lungs room to expand |
Supporting your lungs daily
Healthy habits come first. Some adults also choose a supplement for extra support. LungExpand Pro combines umckaloabo, ivy leaf, mullein, coltsfoot, serratiopeptidase, peppermint oil and vitamin D3 in one tablet a day to support healthy lungs and relaxed airways.
Sources
- National Heart, Lung, and Blood Institute (NHLBI) – "How the lungs work."
- American Lung Association – "Protecting your lungs."
- Sharma G. & Goodwin J. – "Effect of aging on respiratory system physiology and immunology," Clinical Interventions in Aging, 2006.
Common questions
How do the lungs work?
Air flows through the airways to the alveoli, where oxygen enters the blood and carbon dioxide leaves.
What harms the lungs most?
Smoking, followed by air pollution, workplace dust and fumes, and repeated infections.
Can exercise improve breathing?
Regular activity strengthens breathing muscles and makes everyday activities feel easier.