Does external temperature affect cals burned?

Captain_Tightpants

Does external temperature affect cals burned?
E.g. does an equivalent amount of exercise in cold vs. hot weather make any difference?

(P.s. I'm aware if it does the effect is probably negligible, so this is really just a hypothetical question..)

cnsmith2

I'd be curious to know this also lol as my gym can't seem to regulate the temperature inside the gym lately with all the crazy weather outside lol

StephTink76

Bumping to follow! :flowerforyou:

AmyRhubarb

I've wondered that too - seems like keeping warm when exercising on super cold days would burn more, but I have no idea.

@cnsmith - love your profile pic!

714rah714

I would say yes, just because your body has to work harder in order to maintain a normal temperature.

LilRedRooster

Honestly, I can't see it affecting anything more than marginally. You would burn more calories at rest in a colder environment, but when you're exercising, your body isn't focused on keeping you warm, because generally, exercising means that your body has switched to "cool-down" mode, and is worried about dispersing heat out, and not keeping it in.

In warmer weather, I think the only effect is exhaustion from overheating, but that's because your body gets overwhelmed by its attempts to keep everything cool enough. I don't think it literally burns more calories, because it's not working "harder"; it just can't keep up with demand.

Don't know for sure, though, but I really think it's pretty marginal.

emma110984

I don't know the science of it... but I know when I have done bikram (hot) yoga, it does burn more calories than the 'average normal' yoga... hmmmmm

Karstenf

It does burn more calories to keep your body warm, so working out in the cold is helpful. However, you are more prone to injury when doing rigorous exercise in the cold, since your muscles stay so tight. The difference between the two is pretty minimal (about 2% from what I have read), so I don't really concern myself with it. Being a bigger guy, I enjoy cooler temperatures more. Alot of the places where I have seen this referenced are actually talking about what you are exposed to all day. Your body will burn extra calories over the entire day if you environment is a little cooler (below 70 F), even if you aren't exercising.

emma110984

oooo... just found this!!

http://www.livestrong.com/article/312591-how-many-calories-are-burned-in-a-steam-sauna/

jenlarz

Do you have an HRM? Could you test it? Maybe walk outside (if it's colder) for 20 minutes and then inside somewhere for 20 minutes and compare? Just an idea

Dave198lbs

if you know its negligble, why spend a moment of time on it?

lvondy

When I do my workouts at home I always make sure to turn off the fans and air because I find I sweat more that way so I figure I must be burning more fat since there is more sweat. I know Tracy Anderson suggests you workout in a hot room.

Dave198lbs

I don't know the science of it... but I know when I have done bikram (hot) yoga, it does burn more calories than the 'average normal' yoga... hmmmmm

sweating doesnt really burn more calories than not sweating. if you burned more in bikram, it was other factors.

ninerbuff

When I do my workouts at home I always make sure to turn off the fans and air because I find I sweat more that way so I figure I must be burning more fat since there is more sweat. I know Tracy Anderson suggests you workout in a hot room.

You burn more fat when glycogen is depleted. That wouldn't matter if it was hot or cold.

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Dave198lbs

When I do my workouts at home I always make sure to turn off the fans and air because I find I sweat more that way so I figure I must be burning more fat since there is more sweat. I know Tracy Anderson suggests you workout in a hot room.

heat is better only to have warm muscles which makes them less prone to injury if cold.

sweating is not burning calories. turn on your fan and be more comfortable and work out longer or harder to burn more calories.

BrianSharpe

I seem to recall a Canadian Armed Forces study from some years ago that suggested the difference was statistically insignificant. The one thing to be aware of when running long distances in extreme cold is hydration, you lose a fair bit of water through breathing (same thing that faces scuba divers - very low humidity air) and, as the frost on my fleece layer often attests to, you still perspire freely in cold weather.

Captain_Tightpants

if you know its negligble, why spend a moment of time on it?

Because I'm fascinated by the biology of weight loss.

karinaes

When I do my workouts at home I always make sure to turn off the fans and air because I find I sweat more that way so I figure I must be burning more fat since there is more sweat. I know Tracy Anderson suggests you workout in a hot room.

we burn just a bit more calories when it's cold outside because our bodies work a little more to adjust to the external temperatures.
working out in a hot room makes you lose water so, as soon as you drink water/eat after your HOT workout, you'll gain that weight back

emma110984

I don't know the science of it... but I know when I have done bikram (hot) yoga, it does burn more calories than the 'average normal' yoga... hmmmmm

sweating doesnt really burn more calories than not sweating. if you burned more in bikram, it was other factors.

Don't think it was the sweating it was the increased metabolism and heart rate which increased the potential for burning calories...

taunto

**Warning: Possible Bro Science incoming. I dont have any official proofs or links to the publications I have read this, I just vaguely remember reading about this and felt like sharing**

From what I've read, yes, body does try to warm up your external temperature. It will however try to warm up your internal temperature before it'll try to do that for external as a defense mechanism. This is why its said to drink ice cold water, since your body have to warm up that water and raise the waters temperature (proof, you never pee out that ice cold water). So, albeit negligible, your body does burn more calories trying to keep itself warm. HOWEVER, it'll also burn calories trying to keep itself cold. Sweating, like anything body does including breathing burn calories so obviously sweating to cool off your body burns calories too.

Now the question comes in, wether to workout in hot temp or cold. I have read its better to do it in hot temp. Mainly because during a decent workout, your body is warm itself and the cold temperature will not make an affect on it to try and keep itself warm. However, if the room temperature was hot, and your body is also exerting heat, then your body will try and cool itself more (which in a cold room, it'll have less to do) and hence you endup burning more calories in a hot room.

BAMFMeredith

I don't know the science of it... but I know when I have done bikram (hot) yoga, it does burn more calories than the 'average normal' yoga... hmmmmm

This. I do hot yoga once a week and if you wear a HRM doing the same class in an unheated room you burn less calories. I don't think it's just because of the temperature though, I think it's because you're working harder.

I have to work a LOT harder to run 5 miles in 95 degree weather than I do in 65 degree weather, so I would suspect I'm burning more calories. But I don't have any science or anything to back it up, just what the good old HRM says.

tsurvey

Accordng to an article on livestrong, you burn more fat in higher temperatures.
http://www.livestrong.com/article/373028-does-exercising-in-hot-temperatures-burn-more-fat/

SingingSingleTracker

Does external temperature affect cals burned?
E.g. does an equivalent amount of exercise in cold vs. hot weather make any difference?

(P.s. I'm aware if it does the effect is probably negligible, so this is really just a hypothetical question..)

http://www.runnersworld.com/weight-loss/how-does-heat-affect-fat-burning

http://www.livestrong.com/article/526014-does-your-body-burn-more-calories-if-you-are-hot-or-if-you-are-cold/

brianpperkins

I don't know the science of it... but I know when I have done bikram (hot) yoga, it does burn more calories than the 'average normal' yoga... hmmmmm

This. I do hot yoga once a week and if you wear a HRM doing the same class in an unheated room you burn less calories. I don't think it's just because of the temperature though, I think it's because you're working harder.

I have to work a LOT harder to run 5 miles in 95 degree weather than I do in 65 degree weather, so I would suspect I'm burning more calories. But I don't have any science or anything to back it up, just what the good old HRM says.

Considering that a HRM is completely inaccurate for yoga, your analysis is flawed.

And here is an article describing the findings of a University of Wisconsin, La Crosse study that found hot yoga burns no more calories than regular yoga.

http://www.dailymail.co.uk/news/article-2385254/Sorry-Gwyneth-Hot-yoga-popular-celebrities-does-NOT-burn-calories-study-claims.html

JoRocka

I have to work a LOT harder to run 5 miles in 95 degree weather than I do in 65 degree weather, so I would suspect I'm burning more calories. But I don't have any science or anything to back it up, just what the good old HRM says.

are you actually working harder- or you just more uncomfortable??

Cyclingbonnie

I loved the disclaimer someone put about "bro" science. I guess what I'm going to say here is the same thing, except maybe it is "sis" science LOL.

If it is hot you will back off to keep from overheating … thus burn less calories. If it is cold you can hurt something because your are tense. If it is cool you can work out harder without overheating or injuring yourself, thus you burn more calories. Does it need to be extremely cold? No, just allow you to be comfortable. Will you sweat? Well of course you will. You know you will sweat if it is cold and you are working out. Don't go to extremes not too hot and not too cold. If you are working out outside, you can't control your climate, but you can control when you do it. So workout when it is cooler and not at high noon in the warmer weather. In the colder weather workout when it is warmer. Personally I kind of find this common sense.

So external temperature will affect cals burned, only in that it will effect how intense you are able to workout.