Dual Purpose Spring Tensioner Chest Expander Multifunctional Arm Strength Brawn Training Device

1. Plastic handle design, easy to grip.
2. Used for pulling, grasping and expanding to strengthen body muscles.
3. Five springs can be adjusted as needed (as the strength increases, only need to increase the tension, it is recommended not to less than 3 during training).
4. Size: 30x12x6cm.
5. Weight: about 1kg.

Instructions:
1. Stand with your feet apart, bend your left and right elbows, and bend the spring with your hands.
2. Straighten the arms upwards, bend the spring, and then gradually relax, repeating several times.
3. Bend the spring forward with both arms, then gradually relax.
4. The body bends downward, and the arms bend the spring.
5. Hold the spring with both arms behind you, then straighten it and bend the spring gradually.