Speaking of growth lines, I believe many pregnant women are no strangers. Generally, after the body suddenly gains weight, growth lines may appear. Moreover, some friends have a growth line during body shaping and muscle building, and I don't understand why. So what is the reason for increasing the muscle growth line? Is it good or bad? Let's answer this question in detail.

The reasons for increasing muscle growth line are as follows:

1. It may be caused by the tearing of collagen fibers and collagen in the dermis of skin. Although the skin has certain extensibility, if you lose fat and gain muscle in a short time, it may cause the skin to be expanded and stretched. This will happen once it exceeds the range that the skin can bear. If the skin cannot be gathered in time to repair and extend, the dermis will shrink and grow lines will appear.

2. It may also be caused by excessive adrenaline secretion, because everyone is more excited when exercising, and adrenaline secretion will be very strong at this time. Plus, it is easy to have growth lines when exercising. Or when people are under great pressure, they will secrete more adrenaline.

Increasing the muscle growth line is neither bad nor bad, because it has no effect on the body, but only a little effect on the appearance. Therefore, it is suggested that friends who are reducing fat should reduce fat slowly, don't worry, it is not easy to have growth lines.