The Heat Index
Notes from
the heat.
Plain, useful writing on hydration, electrolytes and living in the heat. No hype, no health drama, just what we know, and what we leave off the label.
4 Jun 2026 · 7 min read
The science of a hydration formula built for the heat
We went to the physiology, sweat science, the rehydration standard, how your gut actually takes on water, to answer one question: what should a daily electrolyte for Dubai's heat and air-con actually contain?
Read2 Jun 2026 · 3 min read
What you actually lose when you sweat
In the heat, your body loses more than water. Here's what leaves the bottle with it, and why sodium tops the list.
Read4 Jun 2026 · 4 min read
How much should you really drink in a UAE summer?
Thirst is a late signal. Here's a sane way to think about water when it's 42°C outside, without turning it into a science project.
Read9 Jun 2026 · 4 min read
Why real salt, not twenty ingredients
The back of most hydration packs reads like a vitamin aisle. We went the other way, and left things off on purpose.
Read16 Jun 2026 · 4 min read
Electrolytes for padel, golf and running in the heat
The sports we actually play here are long, outdoor and sweaty. Here's where a sachet fits into them.
Read23 Jun 2026 · 5 min read
How to read an electrolyte label
Two powders can look identical on the front and be completely different on the back. Here's what to actually check.
Read4 Jun 2026 · 4 min read
Zero sugar: why we left it out
Classic sports drinks are built on sugar. We use none, here is the thinking, including the one real argument for sugar and why it does not win for a daily drink.
Read7 Jul 2026 · 4 min read
Travel days, flights and the arrival reset
Cabin air, long transits and landing into a new climate all pull fluid out of you. A simple way to land better.
Read14 Jul 2026 · 3 min read
Electrolytes vs plain water: when each is enough
You don't need an electrolyte drink every time you're thirsty. Here's the honest line between the two.
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