In the gym, there are many tools for us to exercise. But among those numbers, there are some tools that require coaches to teach us how to use them. In the gym, we should use the equipment that we know how to use it, we need to practice right and at the right dose, not too much. When we practice, we should not overdo ourselves whether we are in a good or bad mood, if there are tools that we do not know how to use but recklessly use them, can lead to unintended consequences measure. So when we go to the gym, we need to know what we should and shouldn't do.
