Machine Crunch is relatively simple. Most gyms have this kind of simple equipment. It is very simple and easy to use. You can increase the load according to your own situation and can exercise the entire abdomen well.
Target muscle training: Rectus abdominis as a whole
Action essentials:
1. Press the soft pad on the chest and tighten the waist Lean against the back of the chair and hold the handle behind your back with both hands.
2. Exhale slowly and push the weight down on your abdomen. After tightening the abdomen, inhale and slowly return.
Notes:
1. The range of movement does not need to be too large , just feel the tightening in your abdomen.
2. Do not use force with your hands. You need to use your abdominal muscles to complete the movement.