Whether people with respiratory failure can exercise depends mainly on whether the respiratory failure occurred acutely or chronically. Generally, it is usually advised against exercising during acute respiratory failure, such as severe pulmonary inflammation, drowning, or failure of the nervous system functions. Exercise during this time can worsen the body's oxygen deficit and increase oxygen consumption, potentially exacerbating the symptoms of the disease. However, for chronic respiratory failure, such as chronic obstructive pulmonary disease (COPD) or chronic pulmonary interstitial fibrosis, patients have long been enduring hypoxia or hypercapnia. These individuals can engage in appropriate respiratory rehabilitation exercises, such as respiratory rehabilitation gymnastics and some traditional Chinese medicine practices, which can greatly aid in the recovery from the disease, particularly respiratory failure. The decision primarily depends on the patient’s specific condition and their physical tolerance.