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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

Going out for a run without water

90 replies

AliceAbsolum · 25/06/2026 10:02

Shock horror.

If I don't post in an hour you'll know I've died of heatstroke eye roll

OP posts:
Cherrytree86 · 25/06/2026 13:37

This reply has been deleted

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@TheWildZebra

do you run?

Dermatologically · 25/06/2026 13:39

AliceAbsolum · 25/06/2026 13:33

I didn't make myself sick. I felt slightly nauseous on return.

Humans evolved to run long distances in Africa ffs!

Are you about to drip feed that you're in Kenya Mr Kipchoge?

TheWildZebra · 25/06/2026 13:40

Cherrytree86 · 25/06/2026 13:37

@TheWildZebra

do you run?

Yes, but in this weather I walk.

2025emanresu · 25/06/2026 13:43

AliceAbsolum · 25/06/2026 11:59

I just run most days, rain or shine. If you start telling yourself it's too hot too cold to wet ect you'd never go out.

Least I'm thinking of the nhs by keeping healthy! 😁

This is true but I was out at 5:30 this morning to avoid the excessive heat. If I couldn't have done this I would have waited until as late as possible. Is there any need to go out when the UV/temperature are so high? I did see people running over lunchtime yesterday when it was 35 degrees and I just don't understand that at all.

I have never carried water before (maximum 9 miles) just some money in case and hydrate well before/after.

hugasaurus · 25/06/2026 13:50

I’ve been trying to go out in evenings (can’t do 5am, I don’t exist at that time) when it’s cooler but I also don’t take water with me unless I’m doing more than 10-12k. I can detour to a shop on my usual routes if I really need but I’ve just gone slower/avoided hills and it’s been okay. I had a hill race at the weekend and that was a bit rough at times!

MyThreeWords · 25/06/2026 13:50

NotAnotherScarf · 25/06/2026 11:40

I can only say that you are being stupidly selfish...its a major health threat...its not like you're running into a burning building to save a baby. You are putting yourself at risk for what "oh look at me I'm a runner" the NHS is creaking at the seams and people like you who deliberately put themselves at risk are making it worse

Why not pull your arse out of bed at 6am when it was a pleasant 22 degrees and run then...no go out in the full bloody sun....well I hope you're chafed!

Can't tell if you are joking but lol anyway.

I ran about 5k yesterday and it didn't occur to me to take water. Hydration throughout the day is much more important than gulping down water while running.

AliceAbsolum · 25/06/2026 13:52

Dermatologically · 25/06/2026 13:39

Are you about to drip feed that you're in Kenya Mr Kipchoge?

Now they do run at 5am! Followed by Yams....maybe I should start eating more yams. Will it make me quicker

OP posts:
MagpiePi · 25/06/2026 13:52

YourKonstantine · 25/06/2026 12:36

Personally I don’t know why anybody is running between the hours of 7:30 & 7:30. The heatwave will be much better next week, either miss a run or schedule it at a better time.

I saw idiots out running at 2pm yesterday. 36 degrees here. And yes they are idiots. Unless they’re training for a marathon in the Sahara, there is no need to be out at that time risking their health for a bloody jog.

Maybe they were actually training for the Marathon de Sables?

marathondessables.com/en/

FudgeFudy · 25/06/2026 13:53

Given we're in the midst of a heatwave it's ironic that quite a few posters are being wetter than a haddock's bathing costume. A 5k run is naff all for an actual runner. Yes I'd prefer to run in lower temperatures but if the temperature was 35 when I'd planned a 5k then it is what it is and ahead I'd go. I actually quite like experiencing the extremes that come from running year-round come-what-may on the moors where I live - in summer it can seem like Death Valley, in winter like the Arctic, in Autumn like the Somme and in spring it might actually be nice. The NHS has remained utterly untroubled in the 20-odd years I've been doing this.

IamnotSethRogan · 25/06/2026 13:55

Isn't it more about how well hydrated you are before a run anyway? It terms if health impact i think what you actually drink on the run has nominal affect so some people on the thread are being a wee bit dramatic.

AliceAbsolum · 25/06/2026 13:55

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Done. Do you think its pretty?

Going out for a run without water
OP posts:
TheWildZebra · 25/06/2026 13:58

MyThreeWords · 25/06/2026 13:50

Can't tell if you are joking but lol anyway.

I ran about 5k yesterday and it didn't occur to me to take water. Hydration throughout the day is much more important than gulping down water while running.

Running in this weather is not about being hydrated, it’s about whether your body can cool down sufficiently to prevent heat stroke.

your muscles produce a huge amount of heat, that is why we sweat: to cool them down. As your internal body temperature rises above 37 degrees your brain function begins to be impaired. Reaching higher temperatures is likely if you’re doing exercise or activities that cause your body to create lots of heat. yes drinking water and staying hydrated helps maintain blood volume and aid sweating, but just because you’re sweating doesn’t mean that your temperature is staying sufficiently low for your brain to be able to cope.

Symptoms of heat exhaustion and heat stroke include nausea, dizziness, feeling cold even though you’re hot, and confusion.

exercising in this weather is basically choosing to cook yourself.

TheWildZebra · 25/06/2026 13:59

AliceAbsolum · 25/06/2026 13:55

Done. Do you think its pretty?

I see signs of cognitive impairment resulting from heat stroke.

AliceAbsolum · 25/06/2026 14:02

TheWildZebra · 25/06/2026 13:59

I see signs of cognitive impairment resulting from heat stroke.

😂Fair 😂

OP posts:
MyThreeWords · 25/06/2026 14:04

Some of the posts on this thread are reminding me of the threads that claim all dogs explode when walked at temperatures above 22 degree (or something like that.)

I mean, I know you have to be cautious and sensible about hot weather dog walks, but it is amazing how people like to substitute fixed, extreme rules in place of just using your commmon sense and taking your (and your dog's) unique circumstances into account

stargirl27 · 25/06/2026 14:04

AliceAbsolum · 25/06/2026 13:55

Done. Do you think its pretty?

I miss the laugh reaction so much

MrsAvocet · 25/06/2026 14:08

People are different. I think if you exercise regularly you probably have a reasonable idea of your own needs. Assuming the OP ran her 5k as either an out and back or loop from her home or work she was never more than about a mile and a half from a drink. And unless she's in a very rural area there are also probably shops in the unlikely event of her desperately needing a drink in that time. Lots of people find that carrying a drink whilst running is uncomfortable and even when it's hot, it's not essential for a short run for many.
I can't run these days but I cycle and walk a lot and whilst I do always take a bottle as it's easy enough when you're on a bike or carrying a backpack, I actually rarely drink anything unless I am out for more than 2 hours.(Though I did succumb to temptation when I came across an unexpected ice cream van yesterday!) I drink plenty before I go and when I get back and I'm always fine.
I usually walk or ride for at least an hour a day but it's too hot for me today. But I'm old and fat. I know where my limits are and I'd hazard a guess that the OP does too. She wasn't attempting an unsupported ultra marathon in the Gobi desert when all said and done.

Persephonia1966 · 25/06/2026 14:10

BauhausOfEliott · 25/06/2026 11:49

As someone who is quite prone to nausea from strenuous exercise, I sympathise.

My dilemma is always trying to balance hydration with the fact that if my stomach's full of water when I start running, I want to heave halfway through!

I get sick (actually throwing up) if I get too hot especially combined with exercise. I've learned from grim experience that if I don't drink liquids it won't stop me throwing up. I just end up dry heaving and am the unable to drink water because it gets thrown up straight away. Uurgh.

So I don't exercise in weather like this and even when it's not as bad I will be one of the people mentioned with a water bottle strapped to one hand. Because I prefer not to ruin the rest of the day. But some people seem to have a much higher tolerance to heat so no judgement of they don't want to carry water. I just don't like the (not the OP) smugness that comes from people "I did a three hour hike in the 39degree heat and then I put in a shift building scaffolding up your woke moralists and the BBC weather warnings". Everyone can just do what suits them.

Funnys · 25/06/2026 14:10

I hate all of this performative macho shit.

Its forecast to be 39 here this afternoon. That kind of heat is seriously dangerous for all manner of reasons.

I can only assume the OP is in a cooler area if she's able to be so glib about it.

tellmewhenthespaceshiplandscoz · 25/06/2026 14:11

I am also a weirdo who enjoys a hot sweaty run. Agree that if you are prepared, adapt your distance and pace to the heat it’s fine.

It’s my sunscreen melting and running into my eyes I struggle with.

Persephonia1966 · 25/06/2026 14:11

MyThreeWords · 25/06/2026 14:04

Some of the posts on this thread are reminding me of the threads that claim all dogs explode when walked at temperatures above 22 degree (or something like that.)

I mean, I know you have to be cautious and sensible about hot weather dog walks, but it is amazing how people like to substitute fixed, extreme rules in place of just using your commmon sense and taking your (and your dog's) unique circumstances into account

It's not that the dogs explode. But the tarmac gets very hot, much hotter than you'd think so unless the entire walk is grassy fields it's not good to walk them in this heat. Unless you would walk barefoot yourself to check, they can't tell.you their paws are burnt.

user378657486 · 25/06/2026 14:13

God this thread is stupid, on both sides of the debate.

I hate heat, run much more efficiently in cooler weather, but ran at 6 yesterday and today and was relatively comfortable. Aside from everything else, I don't like too much sun on my face.

I did help pick up a woman who collapsed running just off Ken High Street at around 1pm yesterday. She was clearly in good shape but absolutely beetroot red and unable to cope, which would likely have been me if I'd done it in the middle of the day.

Just know your own limits.

Persephonia1966 · 25/06/2026 14:14

AliceAbsolum · 25/06/2026 12:36

What do you think manual workers do in hot countries?

Siesta.
Hence the song. It's literally about how people in hot countries stop working at midday and seek shade but English people don't.

user378657486 · 25/06/2026 14:16

Persephonia1966 · 25/06/2026 14:11

It's not that the dogs explode. But the tarmac gets very hot, much hotter than you'd think so unless the entire walk is grassy fields it's not good to walk them in this heat. Unless you would walk barefoot yourself to check, they can't tell.you their paws are burnt.

Again, it depends on your dog. I do always check the pavement with my hand, but my dogs regularly run through raspberry thickets and stones and brush (by choice). Their paws are a lot more adapted to unfriendly terrain than most human feet.

We do have cooling vests to put on them but they act like we're trying to murder them with dangerous clothing.

Persephonia1966 · 25/06/2026 14:23

user378657486 · 25/06/2026 14:16

Again, it depends on your dog. I do always check the pavement with my hand, but my dogs regularly run through raspberry thickets and stones and brush (by choice). Their paws are a lot more adapted to unfriendly terrain than most human feet.

We do have cooling vests to put on them but they act like we're trying to murder them with dangerous clothing.

Dogs feet are adapted for stones and raspberry thickets and rough terrain. Like lots of animals they can either grow thicker skin or have.a lot of cushioning in their feet which means there's five and less chance of stones penetrating. Humans also can get used to walking inbarefeet and stop noticing stones (I used to have really rough feet as a child).
Dogs aren't adapted to tarmac when it's hot. No animal is really because it isn't a naturally occurring substance. No amount of running through thorny bushes will help with that. Even sand can get uncomfortably hot and tarmacs actually worse for retaining heat than sand. I have very strong childhood memories of choosing to walk on the sharp stones rather than the hot sand at the beach because my feet were used to stones but not burning.

Don't test the ground with your hand..actually stand in the hot pavement in bare feet for a while and see how long you can bare it.

You can get foot protectors for dogs. But otherwise, if you are walking them in this heat you are hurting them.

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