Link:

http://www.nytimes.com/2016/11/16/well/move/how-exercise-might-keep-depression-at-bay.html

By Gretchen Reynolds

November 16, 2016

Exercise may be an effective treatment for depression and might even help

prevent us from becoming depressed in the first place, according to three

timely new studies. The studies pool outcomes from past research involving

more than a million men and women and, taken together, strongly suggest that

regular exercise alters our bodies and brains in ways that make us resistant

to despair.

 

Scientists have long questioned whether and how physical activity affects

mental health. While we know that exercise alters the body, how physical

activity affects moods and emotions is less well understood.