Your hair grows at 4 nanometers per second (0.000 000 004 m/s).
Your finger nails grow at 1 nanometer per second (0.000 000 001 m/s).
Your hair grows at 4 nanometers per second (0.000 000 004 m/s).
Your finger nails grow at 1 nanometer per second (0.000 000 001 m/s).
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