The Nike Free Metcon 6 is the cross-training shoe that consistently performs in the gym. It's super lightweight with a ...

As a runner, what you do off the track, road, or trail often has just as big an impact on your race performance as what you do on it. Research shows that regular cross-training—plyo circuits, power ...

Flexion is the movement of a joint that increases the angle between the joint and the body part. Movement of a body part to the side is called lateral flexion. This type of movement is commonly ...