This isn't a low evidence area.

Perhaps I should have said it's a low signal-to-noise area. Look at this thread! How is anyone supposed to cope with this mountain of imperatives wrapped in anecdotal evidence and fitness guru personality cults?

Doing what works for most other individuals of your species is hardly a bad heuristic!

It's the "most other individuals of your species" part that I contest. Any valid results tend to be buried under mountains of misinformation.