Leg extension: It is the best way to train the quadriceps muscles of the thighs alone
Starting position: Sit on a bench with a leg extension, and hold the backs of your feet tightly under the leg extension The lower edge of the support stick. Hold both sides of the stool with both hands so that your upper body is sitting on the stool.
Action process: Use the contraction force of the quadriceps to slowly straighten the legs, maintain this static contraction state, and count slowly 1 or 2 in your mouth. Then, put it down. Repeat as shown below
