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Tip: Smith Machine BOSU Ab Crunch

Combining two of the silliest things in the gym – the Smith machine and the BOSU ball – actually makes for a fantastic ab exercise. Try it.

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This exercise targets the rectus abdominis perfectly. Here's how to do it:

  • Position the small of your back over the center of the BOSU ball and "wrap" your spine around it.
  • Grab the bar with your arms perpendicular to the ground. Keep your elbows locked.
  • Start the movement by "curling the spine" upwards as far as your range of motion will allow.
  • Make sure not to protract your shoulders as you curl up in an effort to raise the bar higher (remember, it's an ab movement, not a chest or shoulder movement).
  • Reverse the movement until you're flat on the BOSU. Pause a second before starting the next rep.

Model: Brianna Alexander