The ab crunch on ball exercise works out the core muscles of your abdominals. It's an exercise that works great for your abdominal muscles. This is definetley an exercise that can and will tighten up those ab muscles.

This exercise will develop the entire core muscles of your abdominals if done correctly and properly.




Here are some tips to understand and implement as well as a description of how to do the exercise:

Tips:

• To make the exercise less stable, move your feet closer together.
  
• Do not contract your muscles all the way.
  
• Contract your muscles no more than 45 degrees.
  

• Begin this exercise by getting a medicine ball and sitting on it with your feet flat on the floor.
  
• Let the ball roll back slowly and lie back until your thighs and back is parallel with the floor.
  
• Contract and squeeze your abdominals by raising your torso to about a 45 degree angle.
  
• Then repeat the process as needed.

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