In addition to recognising sweet, sour, salty, savory (umami), and bitter tastes, your tongue has a sixth taste sense - the "sense of carbs" - that allows you to perceive carbohydrates -- the nutrients that break down into sugar and form the main source of energy.
Are you living in the vicinity of a busy highway or an airport or even a hospital? Constant noise emanating from heavy city traffic, industrial machinery, aeroplanes and loud music may leave one at a higher risk of obesity and cardiovascular diseases.
How about planning your next trip to Antarctica? No, this is not a joke as the earth's southernmost continent, with bone-chilling weather, can now boast of a "cell phone service".