Why Caffeine Can Make You Sleepy By Dr Pandula Siribaddana | Living Healthy 360

Calling it Hummingbird, the technological update of Google search is designed to handle more complex queries. Calling it the culmination of 15 years of work, the news was revealed by Amit Singhal, Google’s senior VP, one day before Google officially celebrates its 15th birthday. He spoke at a special press event today in the garage that Susan Wojcicki rented to Larry Page and Sergey Brin when they started Google in Menlo Park, California, “Our algorithm had to go through some fundamental rethinking of how we are going to keep our results relevant,” Singhal said . Beyond announcing that Google search is now be better at understanding concepts, relationships between concepts, and more complex questions, and despite numerous questions from reporters, Google wouldn’t give any more details about how Google Hummingbird actually works, according to various reports .
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The average improvement in performance is about 12 percent, with more benefits noticed during endurance exercise than with shorter exercise (eight to 20 minutes) and a negligible amount for sprinters. More benefits are also noticed in athletes who rarely drink coffee, hence are not tolerant to its stimulant effect. Because each person responds differently to caffeine, don’t assume you’ll perform better with a caffeine-boost. You might just end up nauseated, coping with a “coffee stomach,” or suffering from caffeine jitters at a time when you’re already nervous and anxious. And be forewarned: While a morning cup of coffee can assist with a desirable bowel movement, a pre-competition cup might lead to transit troubles!
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The stimulation of nerves in the brain is a trigger for the release of adrenalin and as the caffeines effect fades off, the adrenaline too would slowly go down. At the same time, continued stimulation of the adrenal gland could make it exhausted and therefore fail to respond to caffeine intake by secreting adrenaline. Thus, long-term use of caffeine could make many people experience such chronic exhaustion and therefore symptoms such as sleepiness, drowsiness, lethargy, low mood and depression. In some people, the same effect could take place rather soon without even consuming excessive amounts of caffeine and in such persons; consuming caffeine even once could make them sleepy.
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