The document discusses the health triangle, which measures three aspects of health: physical, mental, and social. Physical health deals with body functioning and includes exercise, nutrition, sleep, avoiding drugs and alcohol, and maintaining a healthy weight. Mental health relates to thinking, feelings, and coping, and encompasses learning, managing stress, and avoiding mental illness. Social health involves relationships with others through public health, family, and peers. The health triangle emphasizes making good choices across all three areas to reduce disease risk and promote overall well-being.