Your body has anthropologically evolved to pretty much revolve around exercise; your brain and body are absurdly adaptive to immense pressure due to needing to figure out how to flank animals or outrun them despite being in the midst of intense activity.
All for thousands of years.
This is pretty old info, too.

There's a reason why artists and programmers walk so much.
Either a really old study... or a rather pointless study that doesn't teach us much.