Tingling of the hands and numbness of the chest and ribs after taking deep breaths for half an hour continuously may be due to respiratory alkalosis. Continuous deep breathing for half an hour will result in too much exhaled carbon dioxide, causing the onset of respiratory alkalosis. The ratio of oxygen, carbon dioxide and other gases is in a relatively stable state, continuous deep breathing will lead to a drop in the partial pressure of carbon dioxide in the body, the relative reduction of hydrogen ions and other substances in the blood, triggering numbness in the hands and feet, chest and ribs. Patients with serious conditions should be treated with carbon dioxide inhalation in a timely manner, and if the patient has convulsions of the hands and feet, he or she needs to be treated with intravenous calcium under the guidance of a doctor, and at the same time, avoid taking deep breaths for a long period of time in his or her daily life. Patients who have adverse reactions after continuous deep breathing should go to the hospital in time for treatment.