Sweating a lot under high temperature environment, poor physical condition of the patient and prolonged strenuous exercise may lead to potassium deficiency. 1. Under high temperature environment: Generally sweating will not lack potassium, but when the human body engages in physical activities and heavy physical labor under high temperature environment after sweating a lot, it may cause potassium deficiency. 2. Poor physical condition of the patient: when the patient’s physical condition is relatively poor and the whole body sweats a lot, it is easy to lack potassium, and even severe hypokalemia such as fatigue, cardiac arrhythmia and even coma will occur. 3. Prolonged strenuous exercise: After long time strenuous exercise such as fast running, jumping rope, etc., the metabolism of the body will be accelerated, which will easily lead to a large amount of loss of potassium and other trace elements, resulting in potassium deficiency in the body. When you sweat a lot, you should replenish potassium and water in time. If you have uncomfortable symptoms, it is recommended to consult a doctor as soon as possible for clear diagnosis and timely treatment.