"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Please see responses from Life Time Plymouth (Minnesota) Personal Trainer Keri Anderson Thanks a bunch! 1 ...

In the beginning, there was the sit-up. It begat the tubular ab rocker, which reduced neck stress and ensured proper back posture. That, in turn, begat a slew of high-performance ab devices including ...

One of the most popular machines or equipment in a gym, apart from the treadmill and the bench and the cables, is the ab machine. That chair with some weight attached, which you have to pull down in a ...

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 ...