Most of the time, training smart means understanding the basics—so it's worth making time to learn about concepts that can ...

If you’re not a trainer yourself or you never took any type of anatomy or kinesiology course ... up often when it comes to movement are flexion and extension. Understanding concepts like flexion ...

COUES' proposition is, that flexion of the forearm ... so that it is more or less flexed. In extension, the reverse motion takes place, from the pulling back of the radius. The proposition is ...

Movement of a body part to the side is called lateral flexion. This type of movement is commonly associated with the neck and spine. For example, when you move your head toward one of your ...