Basic guide to taking care of my very basic physical needs?

I'm now talking about something other than the more common takinf care of our mental health conversation.

How do I take care of my basic physical needs?

I found myself today extremely physically tired and exhausted.. although I rested all day today and yesterday. And slept well today. Almost too much actually. I woke up irritated from being in bed for so long that my body felt exhausted from sleeping and rest.

So I said today I will not lie down. Not as much as other days for example.

But rn.. I am finding it very hard both to sleep and wake up. I find it hard both to sit down and to walk. I moved a little today.. but whenever I get up I feel so exhausted that I end up sitting down.

I haven't been eating very well these few days.. and not eating at my usual hours due to my messed up sleep schedule that I have been trying to regulate. Today I woke up at almost 3 pm and ate late.. but still I feel very very exhausted. I feel too tired to get up and make food.. and also feel too tired to eat. My body and stomach cannot take food in

I ate a sandwich and a cup of milk today.. and one pastry thing from the market

I also tried to drink water.

But nonetheless.. I am so exhausted and physically in pain..

And every emotion that I have makes it even harder. Every emotion I have (especially anger and rage) makes me feel more exhausted and physically tired.

I feel stuck in a cycle of pain no matter what I do.

Can't eat. Can't not eat. Can't lie down. Can't sit up. Can't walk. Can't sit down. Can't open my eyes. Too bored to close them. Can't suppress or ignore my emotions. Can't let them out without being more exhausted.

Is there something I'm missing.. idk

I also feel a bit cold and chilly. But it doesn't seem like a cold.

I didn't get out in the sun for a while ig.. due to sleep schedule being messed. Also the sun itself was hiding on some days

What do people do to take care of their physical needs?