Very true! The list of causes to fatigue is long, including matters related to physical and mental health, and it is definitely worth seeing a doctor to check this before relying on walks or hobbies to find more energy (not that these are not great solutions if there’s no health issues but painting does not cure anemia).
There’s a lot of good advice to improve things by changing your behaviour. It is also worth checking your health. I have had similar issues but it got better after I was treated for vitamin B9 deficiency. I was just plain exhausted but after a blood test confirming the issue and a few weeks of supplements prescribed by my doc, things got so much better. Depression and burn out have also been mentioned and it is definitely worth asking for a depression test if you see a doctor. That shit is so exhausting. When I was depressed, I could sleep like 10h a night and I still had zero energy.
I was exactly looking for the name of that show in English as it is the one that instantly came to my mind when I saw the post. It’s in no small part thanks to this one, and a couple of others (the magic school bus and once upon a time… life) I decided to do a PhD in animal behaviour.