why do people put their hand in front of their mouth when something horrible happens?
In: Other
I remember reading a theory that crying was also a useful way to show other people you were in pain or distress, without giving away your location.
A glance over to your whimpering hunting companion across the clearing would tell you something is wrong, without the need to reveal your locations.
I would assume the ability to mask or amplify our emotions serves quite an evolutionary benefit.
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