Explore how outdoor exercise boosts vitamin D, improves stress levels, and enhances fitness in ways indoor workouts can't.

A control group that maintained their usual routines. An abstinence group that quit social media entirely. A “tutorial” group that received coaching on how to use social media more intentionally.

“Stef has the hardest job in the world,” Mitchell said. Gilgeous-Alexander’s usual routine begins at 6 a.m., but this is a public gym, where camps enter some days only an hour late ...