The seated ab crunch provides a safer alternative for targeting the abs and low back and it can be conveniently performed at home, office or anywhere a chair, bench or other study surface is available ...

Add Yahoo as a preferred source to see more of our stories on Google. Our core is made up of four muscle groups that are essential to everyday movements, like walking and lifting. And when people ...

Our core is made up of four muscle groups that are essential to everyday movements, like walking and lifting. And when people think about core strengthening, crunches are often the first thing that ...