chronobiology

"An . . . illustrated, interactive guide to ancient, nature-based holidays and customs. Through themed meditations, crafts, and rituals, young readers can learn about old and new ways of honoring the seasons--and create their own"--Publisher.

Examines the research efforts that point to light as a key to our health, mood, and behavior and the roles of sunlight and moonlight in setting bodily rhythms.

Explores the interplay between the functions of our bodies and time.

A healthcare manual that explains the body's rhythms, growth patterns, and aging processes.