It works with whatever political direction you lean on, which stance you have on two or more genders, which religion you love or hate, which gaming platform you prefer, how old you are and many more "divide and conquer"-topics.
It'll be difficult to replace because it's so effective already...
That's what the person you responded to was saying.
Probably shouldn't be having those Kenyans (Kalenjin) competing in marathons either. Completely unfair advantage.
All models are wrong, some are useful.
The corvids looking back wondering what you're doing and they'll communicate back too.
I think becoming a person who would stop and do that, or go birdwatch in general, is probably the important part.
That said, collecting plants or beetles is probably equally beneficial. Geocaching comes to mind too.
Although, I wonder if looking up may contribute, given old people tend deform and bend forward with age. Could affect blood or lymphatic circulation.