Neuroscientist Says Walking Changes Brain Chemistry

A neuroscientist, Gaby Hostnik, stated that just 20 minutes of brisk walking can begin to change brain chemistry. She emphasizes that well-being is an ongoing process, like training a muscle, and encourages people to break out of automatic behaviors. This is to prevent chronic stress from negatively impacting the brain.

Summarized from the sources above. Read the originals for the full story.