When I first got up in the morning, after a night of fasting for about ten hours, the body's nutrients were completely consumed, and people were almost in a state of hypoglycemia. Therefore, it is impossible to carry out strength training under such circumstances. It is very dangerous for human body to carry out strength training under hypoglycemia, which can easily lead to dizziness, headache and other symptoms. After all, when carrying out strength training, the energy needed comes from the glycogen of the body, so without glycogen, there is no weakness, no state and it is not suitable for training.

Secondly, in the morning, the oxygen content in the air is relatively low. After all, all people, plants and animals absorb oxygen and expel carbon dioxide overnight. Oxygen also has an effect on training. After all, insufficient oxygen intake can lead to hypoxia in the body or brain, which can easily lead to fainting, coma and short-term insomnia.

Therefore, on the whole, for the sake of your own safety and health, if you want to do fitness training, you must choose to do it during the day, preferably between 3: 00 and 5: 00 pm. If you really don't have time, it's ok to do it between 6 and 8 after work. Fitness training is for health, so be sure to pay attention to safety!