Why Does Thinking Hard Make You Tired?

After studying or taking a test, do you ever get tired? Why do we get sleepy after thinking hard? Watch More: dne.ws/1P6UOBY Read More: The body and the brain: Impact of mental, physical exertion on fatigue development www.sciencedaily.com/releases/2015/07/150730162454… “Do you ever notice how stress and mental frustration can affect your physical abilities?” Effects of Mental Fatigue on the Development of Physical Fatigue hfs.sagepub.com/content/56/4/645 “The findings suggest that interference in the prefrontal cortex may influence motor output during tasks that require both physical and cognitive processing.” Why Does the Brain Need So Much Power? www.scientificamerican.com/article/why-does-the-br… “It is well established that the brain uses more energy than any other human organ, accounting for up to 20 percent of the body's total haul.” ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos twice daily. Watch More DNews on TestTube testtube.com/dnews Subscribe now! youtube.com/subscription_center?add_user=dnewschan… DNews on Twitter twitter.com/dnews Trace Dominguez on Twitter twitter.com/tracedominguez Julia Wilde on Twitter twitter.com/julia_sci DNews on Facebook facebook.com/DiscoveryNews DNews on Google+ gplus.to/dnews Discovery News discoverynews.com/ Download the TestTube App: testu.be/1ndmmMq

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