Reflexology is a practice where the feet are used to affect the entire body in a beneficial way. Pressure is applied to different zones on the feet and in turn these zones as representations of different parts of the body will carry signals that affect those respective areas.
Reflexology, although it's often combined with massage, is technically not a form of massage. It's a separate practice that applies pressure to reflex zones on your feet, hands or outer ears to affect your entire body.
What's a reflex zone? Simply, it's an area connected to other parts of your body. You have reflex zones on your feet, hands and ears.