Explains how the body reacts to changing conditions such as temperature or humidity, how it adapts to its surroundings, and how the skin protects the body from harmful sun rays.
Describes what happens to the human body while running a race and provides tips for technique in such areas as warming up, breathing, and recovering from the race.
Examines the nutrients the body needs and uses, the digestive system, how the senses of smell and taste contribute to hunger, the importance of water, and the types of foods the body needs to stay healthy.
Examines dreaming as a neurological function and describes in simple terms the length of dreams, their significance, and the changes in the nervous system and the body during sleep.
