Hydration and the Mucus Layer
The airway mucus layer works best when it is thin enough for cilia to move efficiently, and both hydration and ambient humidity affect
3 June 2026Read →
How your airway actually clears itself, nasal breathing, coughs, breathlessness and when a symptom needs a doctor.
The airway mucus layer works best when it is thin enough for cilia to move efficiently, and both hydration and ambient humidity affect
Loud snoring with breathing pauses can indicate obstructive sleep apnoea, a common and highly treatable condition that causes daytime f
Regular aerobic exercise does not enlarge your lungs, but it improves how efficiently your body uses the capacity you already have, red
Most coughs are short-lived and follow an infection, but a cough lasting more than about eight weeks is classed as chronic and has a sh
Sudden or severe shortness of breath is a medical emergency, and any breathlessness that is new, persistent or worsening needs prompt c
Chest wall stiffness, elastic recoil and diaphragm strength all drift gradually from the mid-twenties onward, which is a normal, univer
Diaphragmatic breathing means using the diaphragm rather than the upper chest and shoulders to move air, producing slower, deeper and m
Nasal breathing filters, warms and humidifies incoming air, while mouth breathing bypasses most of that conditioning and delivers drier
Inhaled air is filtered and warmed in the nose, trapped in the airway mucus layer, swept back up by cilia, and finally exchanged for ca
Your airways clear themselves continuously using a thin mucus layer that traps particles and microscopic cilia that sweep it upward to