If excessive exercise occurs again at this time, the blood sugar concentration will be lower, the brain may feel tired because of lack of motivation, people will feel dizzy and weak, and even pale face and cold sweat will appear.
If you continue at this time, it will cause unconsciousness and even coma. Studies have shown that if you exercise without eating any food, it will increase the burden on the liver and even lead to arrhythmia.
Extended data:
Eating before exercise is very particular. You can't eat too much on an empty stomach. Therefore, you can choose the following foods for energy supplement before exercise.
1, Almond: Almond is not only rich in unsaturated fat, vitamin E, high-quality protein and dietary fiber, but also contains minerals such as calcium, magnesium, zinc and iron, which are easily absorbed by human body. Eating almonds before exercise can provide enough nutrition for the body.
2. Banana: Banana is a high-calorie fruit. Every 100g of pulp contains 9 1, 20g of carbohydrate, 0.6g of protein 1.2g of fat. In addition, bananas also contain a variety of trace elements and vitamins. Potassium in it can also prevent muscle spasms. Therefore, eating a banana before exercise can reduce the risk of muscle spasm.
3. Yogurt: After fermentation, the fatty acids in milk can be increased by 2 times than that in raw milk. These changes make yogurt easier to digest and absorb, and the utilization rate of various nutrients can also be improved.
At the same time, yogurt is fermented from pure milk. Lactic acid bacteria can not only retain all the nutrition of fresh milk, but also produce various vitamins necessary for human nutrition during fermentation. Yogurt combined with blueberry can effectively reduce the risk of muscle injury during exercise.
4. Apples: Apples are rich in various nutrients needed by the human body, such as trace elements and vitamins. It is recognized as one of the most nutritious and healthy fruits with moderate sugar content, which is very suitable for eating before exercise.
5. Bread: Especially whole wheat bread can not only provide a lot of energy for the body, but also adjust the balance of protein, carbohydrate and fat.
It is not advisable to exercise on an empty stomach.