Lifting dumbbells causes blood sugar to drop immediately may be due to lifting dumbbells did not supplement energy, lifting dumbbells in the process of consuming a lot of energy, exercise overdose and other reasons. Lifting dumbbells belongs to a kind of exercise, it is recommended to replenish energy before exercise, and exercise on an empty stomach without enough calories will cause a drop in blood glucose; moreover, the process of exercise will consume the body’s calories, which will also cause a drop in blood glucose. In addition, if the weight of the dumbbells is heavy and the exercise is excessive, more calories will be consumed, which will further lead to a decrease in blood glucose. In daily life, it is recommended to eat an appropriate amount of food before exercise to avoid hypoglycemic episodes caused by exercise, and avoid strenuous exercise, choosing exercises that are suitable for your ability and the amount of exercise. In addition, it is not recommended to exercise immediately after meals and should rest for at least half an hour to avoid discomfort. If hypoglycemic episodes occur after exercise, you should eat sugary foods in a timely manner, and if the symptoms recur or are not relieved, it is recommended that you go to the hospital for medical treatment.