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

Two terms that come up often when it comes to movement are flexion and extension. Understanding concepts like flexion versus extension can help you better understand the purpose of your workouts ...

Flexion is the opposite of extension, which is moving your hand backward, so that your palm is facing up. Extension is also part of normal wrist range of motion. If you don’t have normal wrist ...

When your forearm moves toward your body by bending at your elbow, it’s called elbow flexion. The opposite movement is called elbow extension. The three bones involved in elbow flexion are the ...

Plantar flexion describes the extension of the ankle so that the foot points down and away from the leg. When in a standing position, this would mean pointing the foot toward the floor.