You Drank Your 2 Litres Today. You're Probably Still Dehydrated.

The advice is everywhere. Drink more water. Eight glasses a day. Two litres minimum. Track it if you have to.

And most health-conscious people do. They carry the big water bottle around everywhere they go. They refill it twice. They check it off mentally. And they still wake up with headaches, still crash at 3pm, still feel vaguely flat in a way that doesn't fully match how much water they've had.

There's a reason for that.

Water alone doesn't hydrate you. Not properly. Your cells don't absorb plain water passively — they need electrolytes, specifically sodium, to pull water across the cell membrane and into the places it's actually needed. Without adequate sodium, the water you drink moves through your system rather than into it. You can drink two litres of perfectly clean water and still be functionally dehydrated at the cellular level.

This isn't fringe science. It's the mechanism behind why a glass of plain water doesn't fix a headache the way a glass of water with salt does. It's why you can feel thirsty after drinking a lot. The water arrived. The electrolytes didn't.

What proper hydration actually requires.

The three electrolytes that matter most: sodium, potassium, magnesium. Sodium is the primary one — it drives fluid balance, nerve function, and muscle contraction. Potassium works with sodium to regulate that balance. Magnesium sits underneath most of this, involved in over 300 enzymatic processes including the ones that determine how you feel and how well you recover.

Modern diets tend to be low in all three. Processed food has sodium but almost no potassium or magnesium. Clean diets — the ones that cut processed food — often cut sodium too, without compensating. Coffee and alcohol deplete magnesium. Exercise sweats out sodium faster than most people replace it.

The result: a quiet, persistent deficit that water alone will never fix.

Why LMNT.

LMNT was created by Robb Wolf — biochemist, athlete, and someone who spent years tracking the gap between what the hydration industry sold and what the science actually said. The formulation is built around what research shows optimal hydration actually requires: 1,000mg sodium, 200mg potassium, 60mg magnesium. No sugar. No artificial colours. No fillers. Just the three electrolytes in clinically meaningful amounts.

Most sports drinks are inverted: low sodium, high sugar. Sugar draws water into the gut, not the cells. It's the wrong mechanism, dressed up in a bright bottle.

LMNT is the opposite. It works with your biology instead of around it.

It's the first change I've made to my hydration routine that I've actually noticed. The difference isn't dramatic — it's more like the baseline lifting. Less of that flat, vaguely off feeling that water alone never seemed to touch.

1,668 reviews and a 4.88 rating. 97% of people who try it say they'd recommend it.

• 3 boxes, 90 sachets — roughly 3 months' supply at one a day
• About £1 per sachet
• No sugar, no artificial colours, no fillers
• One sachet in 500ml water — best first thing in the morning or 30 minutes before exercise