“Basically, eat high quality food, eat a mix of all food groups, only eat when you are belly hungry and not head hungry“
Yes, though not entirely clear about benefits/logistics of last bit.
Generally have meals at much the same time every day.
Sometimes with ‘snacks’ in between sometimes not.
BUT, well aware that I’ve never had any weight/overeating problems, or any need/desire to be ‘athletically fit’.
No doubt some of that is due to genetics and the ability to ignore pressures to have much interest in takeaways and sugary drinks.
That said, when I was growing up (quite fast some times) there was lots of sugar in tea and on breakfast cereals, large glass bottles of ‘pop’ and fruit squashes - the diluting sort, probably more sugar than fruit, Mars Bars and other chocolate. Plus chippy chips many evenings in teenage years - it was where people hung out, but I was hungry enough to want/need!
And a fair amount of cycling - long loops around the neighbourhood and some longer trips on occasion.
After leaving home there were probably times I didn’t eat enough.
There have been periods of drinking a fair amount most days, but no obvious beer belly.
So lucky and, perhaps, cautious.
I did read (and refer to) an early version of this -
https://www.tsoshop.co.uk/bookstore.asp?Action=Book&ProductId=9780113229291
Ultimately (in the spirit of CCE) “whatever works”.