WorkOnThesisInstead t1_iwl1g1j wrote

Poignant parts indicate that it ain't the exercise:

Participants of a web-based physical activity intervention saw improvements in their depression, anxiety, and stress levels ... these mental health benefits seem to have occurred without notable improvements in physical activity.

It seems that people can experience positive psychological outcomes with physical activity interventions when they believe they have become more active, even if they have not actually increased their activity.