Why do we cry? Because there isn’t enough chocolate in the world. Not at all. When we experience any strong emotion such as extreme happiness or sorrow. It activates our brain’s limbic system which helps control emotions. This system informs our lacrimal glands present below our eyebrows to produce tears. Thus making us cry. Now, crying is more than just a physical response. It is observed that emotional tears contain natural painkillers like endorphins. That help stabilize our mood. Some studies even show that tears produced during emotions contain stress hormones. Like ACTH and enkephalin. So, crying might be our body’s way of getting rid of such stress hormones. Helping us feel better. Besides this, researchers also think that crying serves a social purpose. It may be a non verbal way of showing submission to the attacker. Or a way of gaining sympathy, thus increasing the chances of survival. Why do our teeth turn yellow? Because our teeth need some color in their lives. No. Our teeth basically consist of three parts. The outermost part is enamel. Enamel is white in color. Beneath the enamel, there is dentine. It is yellow in color. Then comes the part called pulp, which has blood vessels and nerves. Is this the same pulp found in our fruit juices? No. Please concentrate. When we drink or eat acidic fruits and beverages like lemon, orange juice, soft drinks, etc. They erode or wear away the enamel, exposing the yellow dentine. And thus, making teeth appear yellow. However, did you know that some people’s teeth are naturally yellowish? This is because in such people, the layer of enamel is thin. Causing the yellow color of the dentine to appear more clearly. And thus, making their teeth appear naturally yellow. Is gluten bad for you? Gluten is bad for everybody. As usual. You are wrong. Gluten is a combination of proteins found in grains like wheat, barley and rye. Gluten makes dough sticky and gives pasta its chewiness. Now, gluten is not usually harmful. But people having a digestive disorder called celiac disease should not consume gluten. But why? When people having celiac disease eat gluten, it triggers an autoimmune response. In this response, the immune cells attack our own body tissues. Damaging the villi present in the small intestine. Thus causing inflammation, diarrhea, fatigue, etc. In addition to this, damaged villi will not be able to absorb the required nutrients. Thus causing weight loss, iron deficiency, etc. Thus, people suffering from celiac disease. As well as those having gluten related allergies should preferably have a gluten free diet. Do you hear Yanny or Laurel? I hear Yanny. But some people hear Laurel. But why? Wait, I will explain. A sound comprises of several frequencies. However, some people have a greater sensitivity to higher frequencies in a sound. While others have a greater sensitivity to lower frequencies. I have a greater sensitivity towards chocolates. Please listen. In this audio clip, the higher frequency forms the sound Yanny. And the lower frequency forms Laurel. So, if you have a greater sensitivity to higher frequencies. Then you will probably hear Yanny. Whereas, if you have a greater sensitivity to lower frequencies. Then you might hear Laurel. In addition to this, age could also affect the frequencies we hear. This is because as we age, we begin to lose our ability to perceive higher frequencies. Hence, older people tend to hear Laurel, while younger people hear Yanny.