I used to get these symptoms all the time before LC
Big blood sugar swings from eating a nearly all carb diet told to eat often to keep blood sugar up. i would often wake with a morning 'hangover' and get totally wiped out by the late afternoon again. I was often literally dragging myself around.
All that has 100% gone now i have had only a couple of migraines in the last few months which is like a miracle to me, after many many years of suffering!!
When i first started LC the difference nearly had me bouncing off the walls. I have calmed down somewhat since
As i understand it my blood sugar doesnt get spiked now and is constantly kept low which is what has removed all those symptoms you mentioned