Polysomnography is a medical term, a method of measuring the body's activities during sleep. A polysomnography machine is used to measure sleep polygraphs to diagnose the causes of sleep disorders. So what is a polysomnography machine, what diseases can it detect and how is it used?

Snoring can be a warning sign of obstructive sleep apnea, a form of sleep apnea that can be dangerous if not treated early. So what is sleep apnea and how can you recognize the signs of this disease?