Exercise Ball Crunches
appeared more recently compared to the better-known "crunches" that have been around for years, the exercise involves using a large inflated ball.
The exercise itís self is a little more difficult than the standard type of crunch the exercise ball crunch will also help improve balance and stability.
How often? How many?
Continue reading: Duration and Frequency
Or continue reading about:
Reverse Abdominal Crunches
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