1. When we get up in the morning, our hearts and muscles are not ready for exercise, so if we don't warm up for a long time, exercise may increase our chances of injury. Especially when outdoor fasting exercise is carried out in winter, it is essential to warm up well. You can do brisk walking, jogging, stretching and so on. Let your body warm up until you sweat a little, and then join the fitness exercise.
2. Morning exercise on an empty stomach is not suitable for everyone. For people with diabetes and hypoglycemia, fasting exercise can easily lead to dizziness, cold sweat, arrhythmia, and even vomiting, resulting in exercise-induced hypoglycemia. Therefore, it is best to drink some water and eat a small amount of carbohydrates such as high-sugar milk, snacks, bananas and raisins before exercise. On the one hand, it ensures the sufficient supply of blood sugar, on the other hand, the decomposition of sugar can promote the burning of fat.