Since the hippocampus tends to be smaller or distorted in people with depression, anxiety and schizophrenia, boosting BDNF through exercise may be one way physical activity might help manage these conditions.
If you click the blue word “error”, the link works.
I love running with an mp3 player. But I have no schizophrenia, only depression/anxiety. Strava, a running/bicycling app, increases one’s mileage because it has “likes” and works as a social network. For the same reason, I find it addictive and sometimes hide my runs there, making them private to get less “likes”.