1. Physiological factors: Lack of sleep: Long term lack of sleep or poor sleep quality, resulting in the body being unable to get sufficient rest. Malnutrition: An unbalanced diet that lacks essential nutrients such as vitamins, minerals, or protein. Overwork: Long term physical or mental labor, excessive physical burden, and insufficient recovery.
2. Psychological factors: Excessive stress: Long term exposure to high pressure and psychological tension can affect the normal functioning of the body. Low mood: Emotional problems such as depression and anxiety lead to a loss of interest in daily activities and physical fatigue. Lack of motivation: unclear goals or loss of passion for life, leading to slow movement and feeling physically powerless.
3. Health problems: chronic diseases, such as anemia, diabetes, thyroid diseases, etc., directly affect the energy metabolism and function of the body. Infectious diseases: such as influenza and cold, the body's immune system consumes a lot of energy when fighting against pathogens. Drug side effects: Some drugs may cause physical fatigue as a side effect.