brain
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TIL the hummingbird brain is 4.2% of its body weight, twice higher than the human brain at only 2% proportionally.They remember well their migration routes, and the yard and flowers they visited the previous year. Some consider them sacred, and in mythology they are healers helping people in need.
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whatilearned
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TIL: Beauty Parlour Stroke Syndrome is an extremely rare phenomenon that describes a stroke caused by having your hair washed over a basin at a salon. It is thought to be the result of reduced blood flow to the brain caused by sustained distortion of the neck during the washing process.
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whatilearned
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TIL When you stand, your body compensates for gravity by constricting blood vessels, ensuring that enough blood returns to your brain. In people with orthostatic hypotension, this mechanism fails and their blood pressure drops, leading to dizziness, lightheadedness, blurred vision and fainting.
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whatilearned
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