In this episode you'll play along with interactive games that unlock the secrets to attraction, you'll learn how your brain quickly calculates what's attractive (or not), and you'll discover how hidden formulas can predict whom you consider beautiful. You'll journey into the secrets of long-term relationships, and you'll play along and discover just what it is that attracts two people together beyond conscious control, including a shocking revelation of the one body part that can often predict compatibility. From secret formulas to brainwave patterns, you'll see the mysteries of attraction revealed. Prepare to discover that beauty isnt skin deep, its brain deep, on Brain Games.

From the Curio channel: National Geographic Channel.