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Resting heart rate and heart rate variability follow a seasonal pattern, but sleep and exercise account for less than 10% of it. New research using a year of WHOOP data from 16,415 US adults finds the swing gets smaller with age.

Reddit r/science·u/whoop_official·7 days ago
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#heart#rate#resting#variability#follow

Resting heart rate and heart rate variability follow a seasonal pattern, but sleep and exercise account for less than 10% of it. New research using a year of WHOOP data from 16,415 US adults finds the swing gets smaller with age.

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Sperm Whales blow bubbles to achieve restful, vertical sleep
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Sperm Whales blow bubbles to achieve restful, vertical sleep

Hacker News·4 months ago
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#news#whales#sperm#surface#buoyancy

New research from the University of St Andrews and Université de Neuchâtel, has uncovered the mechanism which allows sperm whales to sleep in a unique vertical position, just under the ocean surface.

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