The so-called feeling is the feeling of muscles and the reaction of the body during exercise. For bodybuilders, the experience at the beginning of exercise may be nothing more than fatigue, bitterness and boredom. After a period of systematic training, when you do movements, the first thing you experience is that local muscle groups swell and thicken, capillaries dilate and blood vessels protrude, and you feel full of strength and more blood flows to the training site. After training, the local muscles are sore, swollen, full and hot, and the muscles are extremely nervous, and the appearance is obviously expanded. This is the "pumping feeling" in fitness training (also called "bloating feeling") and the "saturation feeling" after training. This shows that the training has achieved certain training results. During the rest recovery period, there is often a physical "pleasure". In fitness training, the stronger the "pump feeling", the better the training effect, and the "training pleasure" generated by "pump feeling" will encourage you to work hard and keep training. The repetition of this "pumping feeling" will bring a "muscle hunger" before the next training. Muscle hunger will urge you to do the next training, so that "pump feeling" and "muscle hunger feeling" form a virtuous circle in training. At the same time, to master the amount of exercise in fitness training, feeling "long pain, acid contraction, numbness and not practicing" is the correct test scale. The fitness training you feel here is not only a visual beauty, but also a good inner feeling in spirit and muscle, which will eliminate your fatigue in work and study. Therefore, in every fitness training, the muscles you exercise should have a "pumping feeling". In short, "finding the right feeling" is very important.