Crunches for abs as well as strong hips, back, spine are very beneficial, with fitness benefits of the abdominal workout revealed in this article.
5 Best Benefits of the Crunch Exercise (Build Your Six Pack
6 Awesome Benefits of Ab Crunches (Build a Great Six Pack)
Bored of crunches? Use this three-move abs workout to build core
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Video: Abdominal crunch - Mayo Clinic
6 Awesome Benefits of Ab Crunches (Build a Great Six Pack)
6 Awesome Benefits of Ab Crunches (Build a Great Six Pack)
Powertec Workbench Multisystem Gym
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Tag: exercise
Weight Training Exercises and Benefits