Hydration is a term in webdev relating to server-side rendering of elements which are later imbued with dynamic behavior.
But I want to call out the other kind of hydration. Drinking water!
I'm not doctor, but I don't think this is controversial advice. Remember to hydrate throughout the day! I believe the most substantial difference in whether I feel energized or exhausted by the end of the day is whether I have properly hydrated throughout. Placing a big glass of water on my desk in the morning is all it takes. If the water is there, I will remember to drink it. If it's not, I might forget to drink enough water throughout the day.
Happy coding and hydrating!