A straightforward school-level guide explains the basic anatomy, physiology, and practical hygiene for children, presenting simple rules about cleanliness, bathing, drinking, eating, teeth, hair, eyes, exercise, posture, clothing, and fresh air. It includes practical how-to sections on swimming and resuscitation, explanations of muscles, nerves, skeleton, and digestion, and warnings about smoking, alcohol, poisons, and sunstroke. Addressed both to pupils and to male and female teachers, the text emphasizes daily habits, preventive care, and clear, actionable instruction aimed at preserving health from childhood onward.