The Vulcan body meld, as practiced on Vulcan. A male and a female each paint a two inch diameter area on their body with Iodine tincture, at the point of the chi, which is about 2 inches below the belly button. Then, the Vulcans rub their iodine-soaked chi areas together. The bi-lateral energy transfer by biophotonic coupling is said to have health benefits by even Mr. Spock himself.