The Mini 9" Ball allows you to work your core in ways you cant do with standard crunches or large exercise balls. The Mini Ball will generate 4 times the work in an abdominal crunch per each second of exercise. This unique workout incorporates…
The Mini 9" Ball allows you to work your core in ways you cant do with standard crunches or large exercise balls. The Mini Ball will generate 4 times the work in an abdominal crunch per each second of exercise. This unique workout incorporates…