No soreness after exercise is a normal phenomenon, but also with insufficient exercise, regular exercise and so on.
Muscle not sore after exercise may be the result of insufficient exercise, if exercise exercise intensity is not enough, or exercise way and method is not standard, are not up to cause muscle stimulation of the load, and thus will not cause the muscle anaerobic metabolism produces lactic acid, naturally, will not appear the body soreness of the situation.
If the long-term adherence to physical exercise, its muscle endurance is better, the surrounding blood circulation is rich, lactic acid produced after exercise will be rapidly metabolized will not cause the accumulation of muscle soreness at this time will not occur, is a normal physiological phenomenon.
Not sore after exercise may also be related to other reasons, do not have to pursue muscle soreness.