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On the benefits of wearing a sleep mask in bed

Jan. 24, 2020 -

Over the past few weeks I have been experimenting with wearing a sleep mask in bed, blocking all light. Our bodies produce the sleep hormone, melatonin, in darkness. Living in an environment awash in artificial light, is therefore exactly the sort of thing that disrupts one's circadian rhythm. Can a simple mask help?

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Average heart rate variability (HRV) during the same night shows a steady increase (and recovery)
Average heart rate variability (HRV) during the same night shows a steady increase (and recovery)
The mask is flexible, enabling a comfortable fit
The mask is flexible, enabling a comfortable fit
Effects of a nap during the day: around 2pm you'll notice a steady decline in heart rate
Effects of a nap during the day: around 2pm you'll notice a steady decline in heart rate
Heart rate graph shows a near flat line, very close to my minimum rate (collected with Biostrap)
Heart rate graph shows a near flat line, very close to my minimum rate (collected with Biostrap)
Pavlovian response: my body knows it's time to sleep when I put my mask on - zzzzz
Pavlovian response: my body knows it's time to sleep when I put my mask on - zzzzz
The soft foam conforms to your face for maximum comfort and darkness
The soft foam conforms to your face for maximum comfort and darkness

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