Get in the habit of taking care of yourself. Factor in that your brain needs to sleep. I know from experience that you can’t think straight --or write well--if you are a zombie. I have tried before and failed. You will just waste time and spin wheels, unable to see the forest through the trees.
Strive for working smart. You will be so much more efficient.
Take care of yourself. It will make your brief better.
And it's a good habit.
Fondly,
Amanda