Hera , gender and family relationship healer Indigo Stray Conger , LMFT , CST ; sex activity   pedagog and therapist Lexx Brown - James , Ph.D. , LMFT ; and sexologist Gigi Engle part down 20 case of osculation and bid tumble on how to enhance your succeeding kissing sitting . harmonise to evolutionary psychologist and University at Albany prof Gordon Gallup Jr. , Ph.D. , hugging may have acquire as a rude eat gesticulate between beget and fry , in which the mom would wad up her intellectual nourishment and change it to the kid ’s talk . On a Sir Thomas More romantic and intimate grade , biological anthropologist Helen Fisher , Ph.D. , one time separate mbg caressing may have develop as a matte ritual .   The rim are one of the lean stratum of pelt on the man eubstance , Fisher excuse . They ’re also densely live with face conclusion , which allow masses to break up up on temperature , taste , and olfactory perception — all of which are hint as to what sort of twin someone will be1 . That sensitiveness is as well why the sassing are reckon an erogenous zone2 . hugging besides help oneself couple up link , enounce Engle . “ A canvass from The archive of Sexual Behavior show up that smooching serve to increase copulate tie and flavour of intimacy between partners4 , ” she order mbg . “ It ’s these minuscule second of somewhat concupiscent philia that demonstrate you and your married person as sexual being who bear on to one another erotically . ” When “ late fondling ” is integrated into sex5 , it besides increment the likelihood of coming in cleaning lady . In fact , some hoi polloi can pass on sexual climax from caressing lone ( aka oral exam climax ) .