Action of stand calf trainer：
1. According to your height, adjust the pad bar or lift heel machine.
2. Place your shoulders under the cushion with your toes pointing inward or outward.
3. Exhale and lift your feet and heels, lift your ankles as high as possible, and tighten your calf muscles. Keep your knees still at all times. When doing this action, don’t bend at all times. Keep this muscular tension position for 1 second before you start to put down your heel.
4. While inhaling, slowly return to the starting position, lower the heel and bend the ankle until the calf is stretched.
5. The above is a complete action. Repeat the action as many times as recommended.
