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Tips for running in the heat

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Tips for running in the heat

Should you be running in the heat?

With the recent high temperatures in parts of the UK soaring above 30℃, people may find themselves questioning the safety of running in the heat. Running in hotter temperatures though is not uncommon, with many runners competing in warmer climates such as Kenya, Ethiopia and Japan, where temperatures average 25℃. But while running in the heat may be considered a risk to some people – such as children, the elderly and pregnant women – as long as precautions are taken, running in temperatures as high as 30-35℃ is fine.

A number of running events take place in extreme heat (over 35℃), such as Badwater, the 135-mile ultra-marathon that takes place in Death Valley, California, where temperatures can sore to over 50℃. There is also the annual Marathon des Sables, a five-day run across the Sahara Desert in Morocco, where temperatures can reach 50℃.

Be prepared …

Running in the 30℃ heat does not come without its risks, it can very easily cause dehydration, overheating which can lead to muscle cramps, excessive sweating, headaches, nausea, tiredness and dizziness. Your performance may be impaired, and you may find you are not be able to run at the same pace or cover the same distance as you might having run in milder temperatures. Also, there can be serious health consequences to exercising in the heat, such as heat exhaustion and heat stroke. But these can be avoided if you listen to your body and take sensible precautions to avoid getting too hot such as drinking enough fluids to stay hydrated, avoiding running at the hottest times in the day (between 11am and 3pm), wearing light, breathable clothing, and by slowing down your normal pace, and consider acclimatising to the temperature (which can take up to 14 days).

Running in the heat causes the body’s core temperature to rise. The body works best when the core temperature is maintained at 37℃, so to help keep the body cool, the body starts to sweat, allowing the heat to evaporate. This sweating causes water loss from the blood and can lead to dehydration.

To help with the sweating, blood vessels dilate to allow more blood to be diverted to the surface of the skin by enabling more heat loss as a way to reduce this rising temperature. This is why people go red and their blood vessels may be more visible in hotter conditions. The issue is that less blood is available to be delivered to the working muscles, which in turn, puts a strain on the body, especially the heart. As a result, sweating can lead to dehydration and so exercising in the heat may make you feel tired and unable to exercise as well as you usually can at cooler temperatures.

For humans, though, one of the greatest things is that we are well designed at regulating our temperature compared with other animals. This enables us to run long distances in the heat. With regular exposure to high temperatures, the body learns to adapt, and the stresses and strains of running in the heat can be reduced. Adaptations to the body include increased sweat rates and blood volume, decreased losses of electrolytes (important salts and minerals) in the sweat, reduction in resting and exercising core temperatures as well as a reduction in heart rate and perceived effort levels when running in the heat. With preparation and common sense, you should be able to run safely in hot temperatures.



Subscribe to comments feed Comments (6 posted)

essay pro 29/11/17
You need to be hydrated very well before you go out running. Hydration is very important to maintain a constant temprature in your body. It's common knowledge.
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tutu apk is indeed a helper and will solve all the problems that you have
Myhr cvs login 30/07/17
nice post...
Great articles thanks for sharing
total: 6 | displaying: 1 - 6

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