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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.

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

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

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

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

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

heat kills more australians than any natural disaster. find out how you can treat and prevent heat-related illness, including heatstroke, heat exhaustion, heat cramp and heat rash.

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.