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Coughing is, in fact, a fantastic cleaning system for the respiratory tract.

Normally, the numerous cilia in the upper respiratory tract remove mucus and "intruders" such as dust particles, sending them to the pharynx. But if something accidentally enters the windpipe (such as a piece of food) or if excess mucus is produced, it triggers a cough reflex. During this powerful reflex, the air is pressed out with great force as the diaphragm contracts, producing a cough that travels up to 80km/hour!


A sleep diary is a record of an individual's sleeping and waking times with related information, usually over a period of several weeks.
This data alone can help people pin point factors favouring good sleep.

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Alfred Vogel's guide to leading a healthy and happy life

Nature is just about the best thing we’ve got!

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