@CNN: If you stand inside the world’s quietest room for long enough, you start to hear your heartbeat. Then you lose your balance https://t.co/XaE2iM6WbU
If you stand inside the world's quietest room for long enough, you start to hear your heartbeat. Then you lose your balance https://t.co/XaE2iM6WbU
— CNN (@CNN) April 2, 2018