Bike fit / correct riding position

The scientific evidence to support additional core strength or functional trunk strength for cyclists is minimal, and most studies suggest that the majority of cyclists get the core strength they need from riding their bikes.

I reckon your more qualified to comment on this than me. But for the record, and for what its worth, I disagree.

I am a big believer in cross training as a method of maintaining training intensity, while reducing the chance of injury. I include in this, separate core training. It made me a faster runner, and while I cant prove this. It definitely feels like it improves my cycling.

I suspect the gains vary massively from person to person. Looking at Froomes form. I wouldnt be surprised if his spine had been removed to save weight. But you cant argue over his ability to ride a bicycle.

Just the opinion of a grossly underqualified guy behind a keyboard of course.