May I share an analogy which comes into my tiny mind ?.
It may be wrong / inaccurate, but this is how I sometimes view it.
You’ve got a car which can use both regular and high octane fuel.
You’ve always used high Octane and you’ve got use to the performance.
However, with fuel prices and all.
You’ve decided to run on regular octane fuel.
But now you notice a change in performance.
What are you on about? I have more energy if I stick to the idiet properly…