What’s wrong with feeling weak? There are psychological factors, physical factors, and bad sleep factors that cause breathlessness. First, the psychological factors are mainly anxiety and depression, because both anxious and depressed patients will feel particularly tired and exhausted, even if rest can not be relieved; second, disease factors, such as anemia, due to the body’s ability to carry oxygen red blood cells decreased, patients will feel particularly tired, hypothyroidism, will also cause fatigue, liver function, kidney insufficiency, can also cause the above symptoms, Kidney insufficiency can also cause the above symptoms, as well as hypokalemia, patients will also feel tired and weak; third, long-term poor sleep, sleep is an effective way for our body to get sufficient rest and recharge the body, if long-term insomnia will also cause weakness.