SPIT GETS A POLISH
     Saliva is more than just a lubricant for your food. One other use of saliva is to protect your teeth. It rushes to dilute acidic food like vinegar and soda that eats away at your enamel. Saliva is also good for healing. It, ironically, is a disinfectant due to its anti clumping component that disallows bacteria to accumulate and also helps to heal skin faster through histatints. Another point explored in this chapter is the grossness of our bodily parts when not part of the body. We can easily swallow spit when it is in our mouths, but when it is outside it is almost as disgusting as swallowing a strangers. However, the reach of disgust does not apply to those we love, which explains why people can kiss without getting completely grossed out all the time.

A BOLUS OF CHERRIES
      In this chapter another sense is brought to the flavor scene. Hearing can also play a part in tasting. For example, we like to eat things that are crunchy. It turns out that we judge the "crunchiness" of something mostly by our ears. The science behind why we like our crisp fruit and our crackling chips is because it is an indicator of freshness.