While it can improve the contour and appearance of the arms, it does not directly increase muscle tone or build muscle. The primary goal of a brachioplasty is to address concerns such as “bat wings” or sagging skin in the upper arms, which often occurs due to aging, significant weight loss, or other factors. By removing the excess skin and fat, a brachioplasty can create a firmer and more streamlined appearance in the arms. A brachioplasty focuses on improving the aesthetics of the arm's contour, while muscle-building exercises aim to increase muscle size and tone.