biological rhythms

The authors describes the significance of the body's biological clock and explains what governs it, problems such as jet lag and depression, and how stimulants effect health.

Explains the occurrence of biological clocks, which, for example, tell birds when and where to migrate, plants when to unfurl their leaves, and which affect human beings in various physical and emotional ways.

Introduces patterns and cycles of day and night, and describes the importance of daytime and nighttime, the length of a day, and more; and includes explanatory diagrams, glossary, and index.

In this companion book to the television series, six of the most spectacular natural phenomena on our planet are explored--the flooding of the Okavango Delta in Botswana; the melting of 10 million square kilometers of ice in the Arctic; the migration of the Serengeti; the great salmon run in British Columbia; the explosion of sea life in Alaska's coastal waters; and perhaps the greatest marine spectacle on the planet, the annual tide of sardines along South Africa's east coast.

Explains the theory of biorhythm and its relationship to rhythms in nature and provides instructions for calculating one's own rhythm positions.

Examines the biological clocks of various plants, insects, and animals including fish, bees, and birds. Discusses internal clocks in humans as well. Includes ideas for activities and further resources.

Discusses the concepts of time and biological cycles, including the phases of the moon, the internal clocks of plants and animals, seasonal rhythms, and the aging process.