Exercise Description and Instruction:
The exercise ball pull in 
uses an ab ball to isolate and work your abdominal muscles.  The 
exercise ball forces you to keep your abs contracted and balance your 
bodyweight throughout the exercise.  
To Perform this Exercise:
Lay
 on your stomach as if you were performing a pushup.  Place your feet 
and shins over an exercise or stability ball.  Keeping your back 
straight and supporting your weight on your hands, pull your knees 
towards your chest, so the ball rolls forward under your ankles.  Crunch
 your abs and then roll the ball back to starting position straighten 
your legs.
Tips:
 Keep your back straight as you perform this exercise.
 
 
 
 
          
      
 
  
  
  
 
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