Feelings of lust flood our bodies with the hormones adrenaline and norepinephrine, which can make our hearts race, our palms sweat, and our heads spin. A recent study lends some practical credence to this — when more than 700 people were asked to color in the parts of a body where they felt activity when they saw images and words linked with love, most people colored the entire body, especially the chest, stomach, and head.