Where does tiredness fall?

How do you determine whether you’re feeling tired or unmotivated? Where in the model would tired fall? Is it considered a physical, involuntary sensation or a feeling?

I have two young kids and while I prioritize sleep, I often find myself thinking, “I’m so tired”.

I hadn’t considered this to be in my control because I grouped it with hunger, cold etc. but now I’m reconsidering …

Please help me understand!