Correlation, not causation. I would be interested in seeing what percentage of those people wake up early in order to exercise. Which, assuming the number is high (and considering the headline implies it with the line 'wake up early and go outside'), it's exercise causing the low body mass, not arbitrarily being in sunlight.
Correlation, not causation. I would be interested in seeing what percentage of those people wake up early in order to exercise. Which, assuming the number is high (and considering the headline implies it with the line 'wake up early and go outside'), it's exercise causing the low body mass, not arbitrarily being in sunlight.