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Data Shows Summer Has Positive, Negative Effects on Humans

Data Shows Summer Has Positive, Negative Effects on Humans

Summary

This article explains how summer affects the human body, using data from wearable devices like Oura rings and WHOOP bands. These devices show that people tend to be more active and spend more time outdoors in summer, but also sleep less and experience more stress due to heat and changed routines.

Key Facts

  • Wearable devices track biological data such as activity, sleep, and stress.
  • Oura has sold over 5.5 million rings since 2015, with half sold in 2024 alone.
  • People increase outdoor activities in summer, including kayaking, swimming, hiking, golf, and paddleboarding.
  • Summer brings more irregular daily routines because of travel, social events, and longer daylight hours.
  • On average, users slept 16 minutes less per night in summer 2024, with lower sleep quality and shorter REM sleep.
  • Heat waves caused users to be less active, with a reduction of 800–1,250 steps on hot days.
  • Despite less activity, some body stress markers increased, showing the body works harder to recover.
  • Wearable device data helps people adjust their habits to reduce heat stress and improve well-being.
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