Monday Tip - Electrolyte Replacement

When the going gets hot, increased sweat means you may need to top up your body salts as you go.


Posted: 28 May 2012
by Jon

Hmmm.... where did my electrolytes go? Eight hours on a bike in Peak District heat did this... salt-crusted helmet straps.
And this...
Shop-bought Nuun tablets contain an optimum balance of electrolyte replacements, but you can make your own electrolyte drinks using a mix of water, salt and orange juice as a start point.

This week's Monday Tip is a topically tropical one, electrolyte replacement, particularly in hot conditions where you're leaching minerals along with body-cooling sweat.

Don't believe us? Take a look at the top we were wearing yesterday on a long day in the Peak. That white depositit is crusted-on salt - we know, we licked it... If you're low in sodium and other electrolytes, it upsets the whole basic muscle system. Your body needs sodium, potassium and magnesium to function at a cell level, if the levels of these go out of kilter, the result could be muscle weakness or twitching or  general fatigue, or, best known, muscle cramps.

So what do you do to keep your body functioning effectively? First, if you're someone who does sweat a lot in hot conditions with a salty residue you shouldn't just chug lots of plain water down. Doing that can actually dilute the electrolyte levels in your body and make things worse.

Electrolyte Replacment - Commercial Drinks

Instead, you should consider using a drink containing some form of electrolyte replacement. That could be an energy drink, which also contains carbohydrates for fuelling or it could be a simple zero calories solution - like the Nuun tablets pictured - which contain an optimum mix of electrolytes and can simply be dropped into your water bottle or hydration reservoir to keep levels topped up.

Bear in mind too, that if you're preparing for a big day in hot conditions, maybe a race or a challenge event, glugging too much plain water in the days leading up to the event can, again, actually be counter productive by diluting electrolyte levels and flushing salts out of the system. If your urine is very clear, it's mostly pure water that your body can't absorb. Aim for a light straw colour and, again, consider using some sort of electrolyte supplement instead of plain water.

DIY Electrolyte Replacement

The downside to commercial electrolyte supplements is the cost, but you can also make your own DIY electrolite drink. Sodium, in the form of salt, is the mineral you most obviously excrete and actually, using table salt containing potassium idoide, will add potassium too. The other excellent ingredient is citrus fruit or juice.

Google home-made electrolyte drinks will bring up dozens of recipes you can try. The optimum for you depends a little on your salt-loss rate, but we'd suggest keeping things simple with a mix of water, orange juice and some salt possibly with some baking soda added. Sodium is the most important element of this, start with one level teaspoon of salt per liter. That won't taste lovely, but adding orange juice will help make things more palatable as well as adding additional nutrients, but there are lots of additional suggestions out there. Enjoy.


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Discuss this story

Salty not tasting lovely is quite true when you sample it in the kitchen, but IME the degree to which you need the salt replacement corellates well with the drink tasting good. When you've been sweating a lot it actually tastes pretty good...

Pete.

Posted: 28/05/2012 at 14:18

Haven't tried homemade ones so don't know how they taste.

 An other way of getting replacement salt, is adding it to your food. Would only apply if camping I suppose, but should 'taste' a lot better.

 Years ago I remember you could get these electrolyte and glucose 'tablets/sweets', like the energy ones you get now, you'd just suck on them like a sweet.

 I haven't seen them in years though.


Posted: 28/05/2012 at 19:52

huskyman wrote (see)

 An other way of getting replacement salt, is adding it to your food.


When I was working on an excavation in central Italy in the late 80s, during a heatwave, we noticed after a few days on site that people were buying and wolfing down crisps at the bar every afternoon, and sprinkling salt on the unsalted Italian bread. It took a bit longer to clock what was happening - we were subconsciously replacing the salt we'd sweated out.

Posted: 29/05/2012 at 00:21

Talkback: Monday Tip - Electrolyte Replacement


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