I've been eating more on the carnivore side just in the past 3 weeks or so. I'm not strict, but no longer doing the morning steel-cut oats with blueberries, etc. I'm also eating much less bread (the home baked bread that I was very proud of).
I'm moving towards eggs for breakfast, and making lots of ground beef/hamburger patties with cheese - making them in bulk and heating them up for quick meals. We've had meatloaf for dinner a lot - not the sugary ketchup encrusted recipes, but more carnivore friendly ones. And I've had very few no-meat meals in the past couple weeks.
I'm totally de-emphasizing a side salad every day at dinner. That removes a lot of work, as well. I will frequently just slice up an apple or an orange as a side, for all of us.
So, I'm not strict carnivore at all, just eating tons more meat and eggs. BUT unless I'm imagining it, I think I'm much more energetic. For instance, last night I actually stayed busy on projects until 9 pm. That's unheard of for me, usually I don't count on doing much productive after dinner.
Also I feel much more peppy. It sounds corny, but I'm standing up straighter, and walking faster. Looking for projects to work on.
I know this may all be the "power of suggestion". And I have been completely submerged in carnivore-friendly/anti-mainstream nutrition books and podcasts for the past couple weeks as well.
However, if this keeps up, I will become convinced that this diet is the way to go.