The picture above shows the ligaments in our knee joints, and as you can see, the ligament is the main tissue that holds our bones together. Its job is to stabilize the joint. Think about it, if we pull the ligaments loose, your joints will lose stability and that's a scary thing.
Back to muscle, because today's topic is what makes good muscle? Today we're going to look at what makes a good piece of meat, from the perspective of the physical properties of muscle.
First: excellent stretching muscles can be stretched under the action of external forces is called stretching properties, like the bubble gum we ate when we were children, my microclimate hand is very cheap, often take it out of the mouth, pulling a long time. A normal muscle can be stretched to his quiet time length of 1 / 3 to 1/2. For example, I, height 1 meter 6, female, biceps muscle belly length of ten centimeters, theoretically my biceps can be stretched to 15 centimeters long.
Second: good elasticity When the external force that elongates the muscle is lifted, the muscle can recover its original length of the nature called elasticity. A lot of people do not know the difference between stretching and elasticity, listen to my explanation, you stretch the bubblegum on that does not move, it does not pop back. But you stretch a rubber band, when you release your hand, it can pop back to its original length. This property of bubblegum being able to be stretched is called stretching, and this property of a rubber band being able to spring back after being stretched is called elasticity. That is to say, a good piece of meat can not only be stretched, have good stretch, at the same time when the external force is lifted, it also has to be able to retrieve well. From the point of view of elasticity, a good piece of meat means that he has a very large amplitude, what is called the amplitude of the muscle, that is, a piece of muscle between the longest stretch to the shortest contraction amplitude.
The third tension of the variability of the name have to be confused, don't worry, wait for me to explain to you. This is an important characteristic of muscle, his performance is the tension within the muscle, will change with the contraction and diastole of muscle fibers. Even in the resting state of the body, there are a small number of motor units that contract in turn to keep the muscle at a certain tension to maintain a certain posture. This property of variability makes the physical exercises we do meaningful. For example, let's say that when you first started working out you may not be able to touch your knees with your bent over hand, but after some time of physical practice, chances are you can almost press your hand to the floor. You have a hunched chest, X and O shaped legs, you go into the gym, and after two or three years you transform into a slender lady. That's what this cool term muscle tone has variable means, and because muscles have this physical property, exercise becomes a gateway to changing our physical condition and shape. After listening to this there is no very excited, have a dream, do not stop, cocoon into a butterfly, phoenix nirvana go up!
The fourth viscosity: viscosity is a characteristic that was first used by the wise square dancers. I often hear the amahs share with me that they go to the sauna center to pull flexibility. This is because they find that stretching the body in a hot environment works well. This property is an outward manifestation of the internal resistance that occurs when a muscle contracts or is stretched and the various molecules within it rub against each other. It gives us a sense of resistance at the beginning of the exercise and uses a certain amount of extra energy. This property has a lot to do with temperature. When the temperature is low, the viscosity is higher, and when the temperature is high, the viscosity decreases. Even before you know this specialized physical property of the muscles, you must have felt him, for example, you will notice that in the winter mornings, when you do physical exercises, the whole body is very stiff and tight, while in the summer it is relatively better. This characteristic reminds us that before you do physical exercise, you must do adequate preparatory activities, preparatory activities help us to increase body temperature, reduce muscle viscosity, improve the speed of muscle contraction and diastole, effectively avoid sports injuries, will make your exercise a better performance. Generally speaking, teenagers with high muscle mobility will have lower viscosity, while older people have greater viscosity. Certain patients with neck, shoulder, back and leg pain exhibit a high degree of stickiness due to soft tissue adhesions. After regular exercise people, muscle viscosity is relatively low, so a good muscle, viscosity is relatively low.
It can be seen that having good muscles provides the prerequisites for the balance of the five major qualities of our body strength, flexibility, endurance, speed, sensitivity, and the balanced development of these qualities, the performance of your body is soft, powerful, coordinated, beautiful posture, dynamic ...... play your imagination, I the straw man! head with too little vocabulary.