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If you can talk but not sing, you?re exercising at the right intensity.

Common causes of fainting include heat, pain, distress, the sight of blood, anxiety and hyperventilating.

Everyone can reduce their risk of having a stroke by making a few simple lifestyle changes.

Always disconnect the power supply before trying to help a victim of electric shock.

An anaesthetic is a drug or agent that produces a complete or partial loss of feeling.

An appendectomy is usually carried out on an emergency basis to treat appendicitis.

A wide range of illnesses, conditions and events can cause coma.

Know the effects of extreme heat, who is at risk and how you can prepare yourself and others.

Australia has about 2,000 species of spider but most species are relatively harmless to humans.

If the thyroid gland is overactive or sluggish, the metabolism will be affected, leading to a variety of symptoms.