In fact, short sleeves and sleeveless sleeves can be used, depending on the physique of the subject. If the subjects are not afraid of cold and sweat easily during exercise, I personally recommend sleeveless, because sleeveless is cooler. Another advantage is that there is no constraint on the arm, so it is more convenient to do the action. Of course, if you wear short sleeves, it is more important to choose loose ones to reduce the constraints on your arms.