Excessive exercise may lead to dehydration, aggravate the heart, and increase wear and tear on the joints, among other consequences. 1. Dehydration: Excessive exercise makes the body sweat a lot, which will cause the body to lose water continuously, resulting in dehydration, the body mild dehydration will only feel thirsty, moderate dehydration will also have urine, irritability, severe dehydration may have neurological symptoms. 2. Increase the burden on the heart: when a lot of exercise, it will cause the heart to beat faster, causing chest tightness, panic, chest pain, and may even induce cardiac arrest and sudden death. 3. Increase joint wear and tear: induce joint diseases. A large amount of exercise will damage the joints and induce joint diseases. Normally, you should pay attention to moderate exercise, warm up well before exercise, and stretch well after exercise. If you feel uncomfortable during exercise, you should consult a doctor in time.