Experts point out that fasting blood sugar level is low in the morning. At this time, exercise, especially strenuous exercise, will increase energy consumption and easily lead to hypoglycemia symptoms, such as dizziness, chest tightness, palpitation, sweating, fatigue and even syncope.
But after breakfast, the gastrointestinal tract enters digestive mode. If you exercise immediately, it will affect digestion and be bad for your health. Many people will struggle with "whether it is better to have breakfast before exercise or after exercise". Since exercise needs an energy source, it is definitely best to eat breakfast first. As mentioned above, it is not advisable to exercise too early in the morning. If you get up early, eat breakfast first, and then exercise half an hour or 1 hour after dinner to see the digestion.
Extended data
Disadvantages of fasting exercise:
1, leading to arrhythmia.
According to expert research, if you exercise without eating any food, especially running, it will not only increase the burden on the liver, but also cause arrhythmia.
Because the human body needs a lot of energy when exercising, and the main source of human energy is carbohydrates in food. If you are on an empty stomach, the energy consumed by the human body mainly comes from fat.
2, easy to get dizzy.
Some people get dizzy easily when doing morning exercises. In fact, the main reason for this symptom is that they do morning exercises on an empty stomach. Because after getting up early in the morning, the nutrients in the human body are almost consumed, and the blood sugar concentration in the blood will be reduced a lot.
If you exercise on an empty stomach, it will not only fail to play a health care role, but also cause dizziness and vomiting in severe cases. In fact, from a professional point of view, the symptoms of dizziness are typical hypoglycemia. So it is best not to do morning exercises on an empty stomach in the morning.
3, susceptible to gastrointestinal diseases
The appearance of gastrointestinal diseases is not only related to daily overeating, but also related to exercising without eating anything after getting up in the morning. Because most people's lives are relatively tight, they start eating lunch immediately after exercise in the morning. In fact, eating immediately after fasting exercise will reduce the metabolic function of the stomach, which will easily lead to gastrointestinal diseases in the long run.
Reference: People's Daily-When is the best time to exercise after breakfast?