Carbohydrates and fat are like the relationship between firewood and coal. During aerobic exercise, glycogen (carbohydrate) is burned first and then the coal is ignited for 20 minutes. Both provide energy at the same time. When glycogen is insufficient, the energy supply ratio of fat decreases. , protein energy supply is increased, that is, muscle is broken down for energy supply.

For those who want to lose fat, it is necessary to consume carbohydrates before aerobic exercise! Without glycogen, you can’t burn fat! If you lose weight after a few days, congratulations!