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when they were already sleep de-
                                                                       prived. The results showed that sleep
                                                                       deprivation hurt self-regulatory
                                                                       strength, but participants who had
                                                                       caffeine were much better off, what
                                                                       means that people who had caffeine
                                                                       had more self-regulatory strength to
                                                                       override social influence and day-by-
                                                                       day problems.
                                                                           Helping you not to lose your
                                                                       temper and being in a good mood,
                                                                       coffee gathers a lot of people in coffee
                                                                       shops around the world. And lovers
                                                                       of this silky elixir, according to a study
                                                                       made by clinical psychologist Dr Ra-
                                                                       mani Durvasula, share common per-
                                                                       sonality styles and psychological
                                                                       traits: introversion and extroversion,
                                                         patience, perfectionism, warmth, sensitivity, social bold-
          Moody Business
                                                         ness and so on. That is how black coffee drinkers were
                                                         said to be “purist”, to prefer to keep things simple and to
              Caffeine’s stimulant effect on the central nervous
                                                         be patient and simple but resistant to making changes.
          system is dose-dependent:  the more caffeine consumed,
                                                         Latte drinkers were claimed to be comfort seekers and
          the stronger the stimulant effect. It blocks a neurotrans-
                                                         generous with their time but could also be seen to over-
          mitter called adenosine, which is a central nervous system
                                                         extend themselves. People who like foamy drinks like
          depressant and has a calming, slowing effect on the brain.
                                                         cappuccino or decaffeinated coffee enjoy being in control
          When adenosine is blocked, adrenaline level increases,
                                                         and are said to be perfectionists that tend to monitor their
          which is chemically associated with the body’s fight or
                                                         health. Last but not least, instant coffee drinkers, are
          flight response and as a result faster heart rate influence
                                                         believed to be the most laid-back people, that are bad in
          bloodstream, sending more oxygen to the brain and in-
                                                         planning and most likely will to put things off through
          creasing your energy level and concentration. But coffee
                                                         procrastination.
          does not only wake us up and keep energized the whole
                                                             True or not, every coffee drinker can notice some-
          day, it also makes us feel good in general. According to
                                                         thing common between one another. In reality, the thing
          Dr. Gary L. Wenk from Ohio state University, coffee
                                                         that unites them all is coffee itself and, simply put, people
          stimulates the release of the neurotransmitter dopamine,
                                                         love coffee—the taste, the smell, the routine, and the very
          a.k.a. neurotransmitter of pleasure. Dopamine produces
                                                         idea. It brings us all together to celebrate life, friendship
          the euphoria and pleasant feelings that people often as-
                                                         and love, in addition,  increasing our productivity, bring-
          sociate with their first cup of coffee in the morning.
                                                         ing health benefits, protecting from some diseases and
              Of course, the simple pleasure of a hot cup of morn-
                                                         aging as well as making us simply happy. What other drink
          ing coffee can significantly effect your day, sometimes
                                                         can cover it all?
          even the act of holding this warm cup might have its role:
          in 2008, researchers at the National Institute of Health
          discovered  that  participants  who  held  a  warm  cup  of
          coffee in their hands tended to attribute warm feelings
          to people, they have never seen before,  and even found
          them more trustworthy. One more reason to have a first
          date in a coffee shop. In another study, published in
          Journal of Applied Psychology in 2014, Welsh and col-
          leagues  tested the way coffee helps us to manage ups and
          downs of every day life when we don’t have enough sleep.
          Some of 299 participant were given coffee or placebo
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