People sleep significantly better and feel more alert during the day if they get at least 150 minutes of exercise a week.

Middle-aged and older women with sleep problems may be at greater risk for fibromyalgia.

People who struggle to fall or stay asleep almost every night are 30% to 45% more likely to have an acute myocardial infarction.

People have an unconscious form of memory that allows them to learn while sleeping.

Elderly women who suffer from sleep apnea -- characterized by disrupted breathing and sleep and a reduction in the intake of oxygen -- are about twice as likely to develop dementia in the next five years.

Sleeping for 6-9 hours nightly not only improves self-rated quality of life, but lowers the person’s scores of depression.

Habitually staying up late at night and sleeping in late each morning is a risk factor for weight gain. 

Researchers have found that starting to sleep more or less than 6-8 hours in late middle age appears to accelerate cognitive decline equal to aging 4-7 years.

Diabetics who suffer from sleep problems have higher insulin resistance, find diabetes more difficult to control, and are more likely to develop complications.

Sleep apnea and excessive daytime sleepiness combine to cause an elevation in risk of death among older adults.