Sincerity is a belief, which emphasizes the importance of positive thinking and emotion to achieve goals. As far as health is concerned, mentality and positive beliefs can have a positive impact on individual health, and honesty alone cannot completely guarantee health. Health is affected by many factors, including genetic factors, environmental factors, lifestyle and so on. In the process of pursuing health, besides positive beliefs and mentality, we need to adopt scientific and reasonable health behaviors, including balanced diet, moderate exercise and regular physical examination.