Includes bibliographical references and index.

A sleepy society: Why teens don't get enough sleep -- The science of sleep: How does sleep work and what does it do for us? -- The saboteurs of sleep: What can go wrong? -- The side-effects of sleepiness: How lack of sleep affects school, sports, and physical well-being -- Drowsy driving: The unexpected killer -- Self-help for sleepiness: Tips for getting a good night's sleep.

12.

Grade 7 to 8.