Harvard and Oxford Researchers Find Strong Correlation Between Exercise, Sleep, and Well-Being
A new study from Harvard University and the University of Oxford, using data from Garmin smartwatches, suggests a clear link between physical activity, sleep, and happiness.
Early findings indicate that daily exercise and adequate sleep are strongly associated with increased happiness and reduced stress.
What the Study Reveals
Garmin released preliminary results from what it describes as the first large-scale study of its kind. While the study will expand globally, initial data highlights:
- Daily activity and sleep—measured by Garmin devices—are key predictors of happiness.
- Emotional stability improves with age, showing a trend of increasing happiness over time.
- Social and cultural activities, meals, and time with loved ones rank among the most happiness-inducing experiences.
Burning Calories Boosts Happiness—But There’s a Catch
Garmin also shared a happiness vs. physical activity graph, illustrating the direct correlation between calories burned and happiness levels. The good news? More activity leads to more happiness. The bad news? You have to actively burn calories to feel the benefit—meaning happiness isn’t effortless.
Next Steps: A Global Expansion
The researchers plan to scale up the study to 10,000 participants worldwide. Participants will receive three daily surveys asking about their happiness levels and activities, with responses cross-referenced against Garmin smartwatch data.
This study reinforces what many already suspect—exercise and sleep are essential for well-being. But with more data on the horizon, the researchers hope to uncover more precise predictors of happiness in daily life.










