Most of us have noticed the inevitable with our bodies — one foot, one hand, or one eye is bigger than the other. These differences may be due to a variety of factors, like handedness or injuries, but it’s important to remember we’re not symmetrical beings. In TED-Ed’s latest video, “Why are human bodies asymmetrical?” host Leo Q. Wan explains that although the human body looks symmetrical on the outside, most of our vital organs are arranged asymmetrically.