Answer this five-question quiz pertaining to the passage "Observing Patients in a Sleep Clinic."

Answer these four questions about your sleep habits, then see a graphic representation of your natural circadian rhythm of alertness and sleepiness over a 24 hour period.

Have you had trouble sleeping lately? Come and see why that might be and some solutions to this problem. This site also includes some fun facts about sleeping and links to related sites.

A thorough summary of the parasite which causes African sleeping sickness. Topics include agents of transmission, geographical distribution, symptoms, life cycle and treatment options.

Article reports on a recent study which found that people who spent a week in the woods experience a shift of two hours in their internal clocks. Includes a list of vocabulary words from the article.

Witnessing changes that take place on your body can sometimes be a confusing experience. Are the changes normal? Are you changing in ways unlike anyone else? This site may help to relieve some worries that an adolescent may be pondering....