In order to save the time of going back and forth to the gym, more and more people begin to choose to exercise at home, and dumbbells and barbells are undoubtedly the basic choices. There is no doubt about the single choice of dumbbell, but because of the straight bar and curved bar of barbell, many primary fitness enthusiasts are confused and don't know which to choose. In fact, many intermediate fitness friends generally have two kinds of rods. Because the weight plate can be used simply, Yu Jun often suggests buying both rods together. In this paper, Yu Jun briefly introduces the differences between them according to his own experience and different exercise parts. Which is better to practice super biceps brachii? Both curved bar and straight bar barbell can be bent, which is more beneficial to exercise biceps brachii? This is a question of many fitness enthusiasts. You can experiment with straight bars and curved bars yourself, and compare them standing and leaning. Generally speaking, straight bar bending can lift more weight than curved bar bending. What is the reason? Biceps biceps brachii has two heads: a long head and a short head. The long head is connected with your back shoulder through the shoulder joint, and the short head is connected with your front shoulder. When standing (or sitting), the straight bar emphasizes the short head of biceps brachii, because the short head is in a very good position to exert force. The curved bar mainly stimulates the long head of biceps brachii, and the long head is not the most easy position for it to exert force during standing and lifting. Therefore, for biceps brachii exercise, straight barbell and curved lever collar exercise are equally important. Using these two kinds of barbells to bend can maximize the growth of both ends of biceps brachii, which will make your whole upper arm grow even more. Of course, generally speaking, using a curved grip will make your wrist more comfortable.