"First national study of US parks finds low use by adults, seniors and females First national study..."

“First national study of US parks finds low use by adults, seniors and females First national study of US parks finds low use by adults, seniors and females”

- https://www.sciencedaily.com/releases/2016/05/160518074007.htm

source http://physiquesportsuk.tumblr.com/post/144661445734