Because when we run for fitness, we are actually consuming energy inside our body. After all, in the case of just eating enough, the average person is not going to go to the gym. All the words, when the consumption of almost to go to the gym, then the energy we consume is from inside the body. I'm going to elaborate on my own opinion below.

First of all, the energy that we consume inside our bodies comes from body fat. So, this kind of fitness will only make your body become more thin. It's not what we want to achieve in fitness. So a little bit of food at a time like this can give us energy. This will not be thin, and then fitness can also show that they become stronger, after all, this is the main purpose of fitness.

But then, when eating something must first pay attention to, can not intake too much. Because this time just after the exercise, direct intake of too much words, will cause a certain burden on the stomach, the health of the body is not good.