Grip bar: Hold the heavy barbell bar with your fingers.
Lateral bending lift
Hold the dumbbell with both hands or one hand (the fist eye is forward), the upper arm is close to the body, bend the bell up to the shoulder, and slowly put it down to recover. Mainly develop forearm extensor muscles, and develop upper arm anterior muscles at the same time.
Forehand wrist flexion
Hold the barbell with both hands (palm down), the grip distance is shoulder width, and the upper arm is close to the body side. Bend the barbell upward, lift it to the limit, and then slowly lower it to recover. During exercise, the forearm muscles are always in a state of tension and exertion. Mainly exercise the extensor muscles of forearm and the lateral muscles of upper arm.
Wrist bending prevention
Sit at the end of the stool, hold the barbell with the palms of both hands up, the grip distance is shoulder width, the forearm is attached to the enlarged leg, and the wrist is relaxed. Bend the barbell up hard until it can't bend any more. Then relax and return.