Laziness and sleepiness are not the same thing, you can attribute tiredness to sleepiness but laziness can be somebody that is not tired but don't want to work. It's natural to become tired after a stressful work, at that point the body needs rest and sleep can be a remedy. A lazy person wants to rest and sleep all day when they have things to do and their body can carry them.
On the contrary, they are very related. A person who is hard working will continue to want to work even when they are very tired or near exhaustion. A lazy person will want to rest even when they are slightly tired. Being lazy is a disease and will cause you to sleep longer hours. A lot of people who are lazy justify their long sleeping hours by many excuses, none of which are true.
Well I do work a full 8 hours day and then when I come home I am so tired. I do not think it does mean that I do have some laziness. And sometimes all I want to do is sleep for some hours.
8 hours of work is on the low end, and nothing to get tired from. Unless you are old, sick, nutrient or otherwise deficient, or are doing extremely physically demanding work, you are probably a bit lazy.
I hadn’t considered how digestion might affect energy like that. I’ll look into probiotics and black seed oil more seriously; thanks for sharing a different perspective on what might be behind constant tiredness.
Food and digestion is at the core of everything, look up the vagus nerve.