Function of eight-character exerciser

Each has its own advantages. Doing it quickly can practice explosive power. Doing it slowly can exercise muscle strength and endurance.

You can work hard quickly, relax slowly, cooperate with breathing, exhale when you work hard, and inhale when you relax.

How to use:

1. Bend your arms and bend the spring hard at the back of your neck.

2. Put your arms forward, bend the spring upward, and then relax.

3. Keep your arms close to your chest, bend the spring, then straighten and slowly relax.

4. Stand with your feet apart, bend your right elbow, bend the spring with your left hand, then bend your left elbow and bend the spring with your right hand.

Put your arms behind your back, hold the spring tightly, then straighten and bend gradually.