In the amygdala, which is part of the brain that is linked to fear, and lower activity in the prefrontal cortex.
Part of the brain involved in reasoning and decision making.
It allows more oxygenated blood to be delivered to the muscles.
It was developed by Alfred Wegener around 1912-1915 time frame. He proposed his theory of the "continental drift". He proposed that the continents plowed through crust of ocean basins. He said that the continents look like a puzzle piece to put together. It's very interesting.
Hope this helped :)
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