mindblowingfactz: Anechoic chambers are the quietest places on Earth and have background noises measured in negative decibels. After a few minutes in chambers, you can hear your heartbeat and blood circulating in your ears and may experience troubles

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mindblowingfactz: Anechoic chambers are the quietest places on Earth and have background noises measured in negative decibels. After a few minutes in chambers, you can hear your heartbeat and blood circulating in your ears and may experience troubles

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