This module on health and safety will introduce the basic concepts of nutrition, healthy life styles, symptoms and signs of illness, medication issues, responding to environmental emergencies, and basic good health practices. Health is not just the absence of disease; it is being in the best possible health physically, mentally, emotionally and spiritually. A healthy lifestyle includes good nutrition, physical activity, avoiding smoking and other substances, stress management and early detection and treatment of health problems. Wellness is about habits that maintain good health, such as hand-washing, eating properly, getting plenty of exercise and good personal hygiene. Safety is about avoiding harm or injury. Certain practices, such as locking up poisons, increase safety by reducing the risk of being injured.