Dizziness is usually caused by the following factors: 1, hypoglycemic reaction, climbing is a good aerobic exercise, but the body’s consumption and burden balance is relatively high, which will make the body consume a lot of glycogen and heat, and therefore will cause a transient hypoglycemic reaction, which will lead to clinical symptoms of dizziness. 2, climbing will cause transient ischemia and lack of oxygen in brain cells, especially lack of oxygen is relatively more serious, usually because 3, when the original coronary artery atherosclerotic heart disease, myocardial ischemia, cardiomyopathy and other underlying diseases, climbing will increase the load on the heart and lead to further reduction of heart blood supply or heart dysfunction, so it will induce the clinical symptoms of dizziness due to inadequate blood supply to the cerebral arteries.