OH Digest

OH Digest

Share this post

OH Digest
OH Digest
Tired? You’re Probably Just Dehydrated
Optimised Hydration

Tired? You’re Probably Just Dehydrated

How a 1% drop in hydration can mess with your energy.

Optimised Humans's avatar
Optimised Humans
May 20, 2025
∙ Paid

Share this post

OH Digest
OH Digest
Tired? You’re Probably Just Dehydrated
Share

You know that sluggish, foggy, “why am I so tired” kind of feeling? The one that creeps in mid-morning or crashes hard at about 3PM?

Most of us call this “tiredness”. But if we were to ask our bodies, we might probably get a different sentiment: “thirst”.

Because, long before you feel parched, long before your mouth gets dry or your head starts pounding—your cells are already running on empty.

And the first things to go usually are your energy, clarity, and focus.

The Quiet Energy Nobody Talks About

We’ve been conditioned to link tiredness with effort.

You’ve worked hard. You feel worn out. Makes sense, right?

But did you know?

Even a 1–2% drop in hydration can reduce your energy, cognitive sharpness, and mood — before you ever feel thirsty.

You don’t have to be sweating or overexerting. Modern life drains you — emails, meetings, chores, stress. And if you’re not drinking water with intention, your body starts rationing.

First thing it cuts? Mental clarity and physical energy.

Here’s a Tiny Experiment

Try this for the next 3 days:

This post is for paid subscribers

Already a paid subscriber? Sign in
© 2025 Optimised Humans
Privacy ∙ Terms ∙ Collection notice
Start writingGet the app
Substack is the home for great culture

Share