The cause of the fat on the back of the arms seems to be fat, so most women are accustomed to blaming it on their failure to lose weight.
In fact, it is not difficult for us to find that "bye-bye meat" can also appear on some relatively thin girls. This is because the shape of the arms comes from the shape of the muscles.
Due to the low content of skeletal muscle and the inability of fat to attach to the bones, sagging and relaxation naturally occur when the arms are raised
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