Healing power from holding hands

I had a few girlfriends who seemed to have a healing power just from holding their hands. There was one girl in particular. I could be tired, in a bad mood and by holding her I'd feel completely restored. When I held her hand I would enter a trance like state. Unfortunately most of my girlfriends didn't have this healing power. I always wondered why some had this healing power while others did not because it did not seem to be a matter of attraction, relationship level etc but more of unknown quality that develops.