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Terra API Research Published in Nature Portfolio Journal
EntSun News/11095847
Study in npj Biological Timing and Sleep analyzes 185,143 nights of sleep data across 49 countries and highlights Terra API's role in population-scale health data research.
ISLINGTON, U.K. - EntSun -- Terra API today announced that Terra Research has been published in npj Biological Timing and Sleep, a Nature Portfolio journal.
The paper, "Variation in sleep duration across latitudes and countries: a Bayesian hierarchical analysis of wearable data," analyzes 185,143 nights of wearable-derived sleep data from 697 individuals across 49 countries.
The study found that longer daylight was associated with slightly shorter sleep duration, with sleep decreasing by about 4.4 minutes for each additional hour of daylight. The effect was measurable at scale, but smaller than many people might expect. Individual habits and country-level differences explained more variation in sleep duration than latitude or season alone.
More on EntSun News
The research was conducted by Faraaz Akhtar, Alistair Brownlee, and Cameron Crawford as part of Terra Research. Terra API provided the wearable data infrastructure used to process and analyze the de-identified dataset.
The Nature Portfolio publication is available here:
https://www.nature.com/articles/s44323-026-00092-2
Terra's official research summary is available here:
https://tryterra.co/research/terra-research-nature-publication
About Terra API
Terra API enables connectivity for health apps, to developers and AIs
More information is available at:
https://tryterra.co
The paper, "Variation in sleep duration across latitudes and countries: a Bayesian hierarchical analysis of wearable data," analyzes 185,143 nights of wearable-derived sleep data from 697 individuals across 49 countries.
The study found that longer daylight was associated with slightly shorter sleep duration, with sleep decreasing by about 4.4 minutes for each additional hour of daylight. The effect was measurable at scale, but smaller than many people might expect. Individual habits and country-level differences explained more variation in sleep duration than latitude or season alone.
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The research was conducted by Faraaz Akhtar, Alistair Brownlee, and Cameron Crawford as part of Terra Research. Terra API provided the wearable data infrastructure used to process and analyze the de-identified dataset.
The Nature Portfolio publication is available here:
https://www.nature.com/articles/s44323-026-00092-2
Terra's official research summary is available here:
https://tryterra.co/research/terra-research-nature-publication
About Terra API
Terra API enables connectivity for health apps, to developers and AIs
More information is available at:
https://tryterra.co
Source: Terra API
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