We all hate doing the same thing mechanically, thinking that it is no different from robots, and so is fitness. If you just mechanically repeat certain actions, then you become a fitness machine, which won't make great changes to your body.
When we talk about a fitness tycoon, the first thing that comes to mind is their figure, which is so desirable, but behind it is definitely not the mechanical repetition of some actions, but amazing skills. They use their movements very flexibly and know every muscle like the back of their hand.
Therefore, it is not feasible to repeat the action. If you want to make achievements in fitness, you must need a lot of practical skills to support it. With these, when you are training, you won't feel boring, and even feel extremely interesting, especially when others ask you for advice.
Therefore, it is not so much that you have to change your movements every once in a while, but rather that you have mastered the skills of this movement. We need new exercises to stimulate nerves, so that muscles can be active again and grow at an appropriate speed. This is what everyone is happy to see.
If you don't change the action for a long time, it will inevitably make your body adapt to the stimulation brought by the action. It's the muscles behind that adapt to this pattern, every time. Our bodies are smart, but these smarts are fatal to the fitness effect.
When an action is skillfully used by us, it means that the connection between nerve and muscle is maximized, and our use of muscle becomes more efficient, bringing about the same changes, which will stimulate the muscle less, but the strength borne by the muscle will increase.
When we increase the weight to a certain extent, the intensity of muscle training will not change, which means there is no room for improvement, because the stimulation it brings has been adapted by the body, which is undoubtedly very fatal to our fitness.
Therefore, we need to change the action, make the familiar stimulation mode useless, let more muscles participate in the action, so as to recruit more muscles and reduce the dominance of nerves on muscles. These are the main purposes of the change action.
Fitness is not just about gaining weight, you can get better results physically, and the difficulty of movement should also show increasing changes. Under their action, the muscles in the body can keep their own speed up and improve. I believe everyone knows this.
Then what we can think of is that in our back training, we can classify the paddling actions into one category, starting with the simplest instrument paddling, then paddling with one arm dumbbell, and finally paddling with barbell, which is an incremental change.
Another example is the most basic abdominal training, which classifies supine movements into one category, from supine belly rolling, to supine leg lifting, and then to supine ends. The actions completed by prone are also one category, from flat support to mountaineering running, and then to other variants of mountaineering running, and so on.