: Saliva contains hormones like testosterone, which can increase arousal and signal sexual readiness.
: Because the brain is so highly attuned to this information, a "bad" first kiss can actually stop a promising relationship in its tracks by signaling biological incompatibility. 2. The Brain’s "Chemical Cocktail" : Saliva contains hormones like testosterone, which can
: The exchange of saliva allows us to subconsciously pick up on a partner's immune system markers (MHC genes). Humans are often attracted to those with different immune system genes, which can lead to healthier offspring. : Saliva contains hormones like testosterone
Kissing acts as a "biological litmus test" for choosing a partner. When we lock lips, our brains process a flood of sensory data: : Saliva contains hormones like testosterone, which can