Generally speaking, carbohydrates will be consumed as energy in the first 20 minutes of exercise. After 20 minutes, fat will be burned as the second energy. So we generally think that aerobic exercise needs more than 20 minutes to burn fat.

1, 20~30 minutes before morning exercise, you need to replenish enough water. Drink slowly when drinking water, because it needs to give the kidney a certain metabolic time to let the kidney excrete excess water from the body.

2. It is generally recommended that the elderly or the infirm eat breakfast before doing morning exercises to avoid hypoglycemia, dizziness, dizziness, palpitation and nausea.

4. You can eat some cereal before morning exercise, such as a small bowl of porridge or a piece of bread steamed bread, and then have a complete breakfast after morning exercise, including staple foods such as high-protein food and vegetables.

5. After waking up, the human body may be in a semi-dehydrated state. Therefore, you must drink half-warmed water before exercise.