Transcription: In this experiment, the mask collects the air the young lady breathes. The air is measured and then analyzed in a laboratory to determine the amount of energy she uses under different working conditions. Now, we'll give the young lady 80 decibels of unpleasant noises, that is, about the amount of noise in a traffic jam on New Year's Eve. Hold your ears. The results prove that under pleasant, quiet conditions, the average person uses 19% less energy to do 10% more work.
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