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Abstract
Good achievements are supported by the ability of athletes to manage energy during competitions. Fatigue that occurs in athletes is caused by reduced energy provided by the body. Carbohydrates stored in the muscles and liver in limited quantities, so excessive activity or long-lasting exercise will quickly deplete the carbohydrate store. This activity aims to see the use of blood glucose in various athletes or players from several types of sports. The method used is a pre-post test one group design technique by checking blood glucose values during exercise and after exercise. Of the 4 sports carried out, swimming became the sport that experienced the most decline in GDS values, then futsal, running, while e-sports more experienced an increase in blood glucose values. The conclusion of this activity is that athletes who will do matches should maximize the energy and nutrients consumed so as not to experience hypoglycemia