No, pain can be said to be a good thing or a bad thing. It's good for people who gain muscle. The way to increase muscle is to stimulate local muscles with heavy weight to achieve slight muscle tearing, and to increase the cross section of muscles through supplementary repair by protein, so as to achieve the effect of increasing muscle. If the local muscles are very sore and tingling during exercise, it may be a symptom of muscle strain. You must stop exercising and deal with some muscle strain immediately. It is a bad thing for people who lose weight, shape and train physically. Physical pain will affect the next day's training, muscle strength and endurance decline, the body will become tired, will not recover immediately, and can not achieve the effect of exercise. Affect the daily life and work of the next day.