sagittal plane

The sagittal plane is an imaginary flat surface that divides the body into left and right parts. Think of it as a vertical line running from front to back, splitting you into two mirror-image sides. Movements happening along this plane include forward and backward motions, such as walking, running, or bending forward and backward. It's one of the key planes used to describe how the body moves and positions itself in space, helping us understand actions like lunging or doing a sit-up.