That's a benefit for those who consider it a benefit. I personally don't find this interesting.

> social bonding

This applies to plenty of videogames as well - both directly to multiplayer, and to singleplayer games as social objects for discussions with other people.

> cardiovascular/muscular/mental fitness, tolerance to pain

In the same sense, videogames exercise your reaction time, complex reasoning skills and spatial awareness.

Point being - side effects are side effects, but both videogames and those outdoor pursuits listed are just waste of time, economically speaking.

Some reading on green exercise:

http://www.exeter.ac.uk/news/featurednews/title_543531_en.ht...