It seems counter-intuitive to me to blow cold air on your body when you're exercising, but I can't find specific info as to why.  Your core body temp is up, you're sweating and hot, your muscles are warm.  Why would you then interrupt the body's natural process by chilling yourself with a fan?  Seems so unnatural but oh so common in gyms today.
215491
I never heard it was bad, my walking machine has a fan built in and it helps me go further. I think when you're that hot, a fan wouldn't take the core temp down enough to hurt the muscles.
171730
its your body's airconditioner, cool huh1
189379
jog a litle bit to warm up your muscles,them stretch.Don't stretch cold muscles
244778
our bodies constantly generate a lot of heat because of our metabolism. So we have to constantly lose heat to maintain our normal temperature. \n\nIf you put a bucket of warm water outside, and that warm water just happened to be 98.6 degrees Fahrenheit, but the outdoor temperature was 85 degrees Fahrenheit, the water would cool down. That's because the outdoor temperature, while still warm, is cooler than the temperature of the water. Heat naturally flows from warmer places to cooler places. The heat's "goal" is to reach equilibrium–a state where everything is the same temperature as everything that surrounds it. That's why a hot bowl of soup or a cold glass of soda will eventually reach room temperature if you leave them out long enough.\n\nThe difference between you and a bucket of water (well, one of many differences) is that your body is constantly generating more heat. All that heat has to go somewhere, so it tries to escape through your skin. The greater the difference between the outside temperature and the temperature of your body, the faster that heat will escape. That's why you'll feel much cooler on a 60-degree day than on a 90-degree day.
112619
are you burning fat or building muscle?\n\nIt depends on what you are doing.  It sounds very good for building muscle..not the best for burning fat.\n\nIt is a tough workout none the less!!  Keep it up!
534638
I dont know why gym teachers do these kind of things..I think its on purpose when the weather is nice they will run you inside and when its cold they run you outside and Ill bet they had a coat on to..am I  right....I think that sucks and I dont think its right at all..
603596
Wind chill is a theoretical value for what a person feels when wind is blowing on them at a cold temperature. It is not an actual temperature, but it is what the conditions feel like. For example, 40 degrees with no wind is tolerable with a light jacket. But, if it is 40 degrees and a 20 mph wind is blowing, it feels more like 30 degrees. \nHeat index is another theoretical value for what a person feels when it is humid or dry at a warm temperature. For example, if it is 90 degrees and is about 40% humidity, it will feel like 90 degrees. But if the humidity is 80%, it will feel like 95. It also works the other way. If the humidity is 10%, it will feel like 87 because it's so dry. When it's dry, sweat evaporates almost instantly off your skin, making you feel cooler. When it's humid, the sweat can't evaporate very easily, making it feel warmer. With wind chill, there is a layer of air insulating your skin from the cold. When wind blows, it disturbs the layer and makes you feel colder.
598570
Lack of warming up is the problem. Also, like what we're doing when warming up is also to stretch. The whole idea is to stretch the muscles and make them flexable and to loosen up the joints and get some physical heat into them.
550920
Heat is generated through inefficient energy reactions in our body.\n\nAs you may remember from physics class, no reaction is 100% efficient - for example: In a light bulb, not all of the electrical energy in converted into light; some is converted into heat.\n\nThe same is true of our cells, and a some of our energy is released as heat (instead of what is intended!) Muscle movement is especially inefficient, with a great deal of the energy used for muscle cell contraction given off as heat. This is why you get hot when you do exercise!!
446626
No if you are comparing to the hot weather, you actually burn more calories in the hot weather because your body has to work harder to keep itself from overheating. In the cold weather all your body has to worry about is supplying your muscles with blood and very little extra blood to your skin to dissipate the heat. \n\nCold weather itself doesn't increase calorie needs. You don't burn any extra calories unless you start shivering. Although your body will most likely use a considerable amount of energy to warm the air you breathe when you exercise in the cold, in the summer you would just simply dissipate that heat via sweat. In the winter, you sweat less. \n\nNow if you're trudging through snow or walking into strong wind then yeah you'll be burning slightly more. The reason why some people lose more weight while walking in the winter weather is actually due to the cold air's effect on clearing the mind and reducing stress. That in itself has been proven to help weight loss. \n\nRemember that food provides the fuel that you need to generate heat. Therefore as always suggested, eat healthy so you can generate the heat that you need.\n\nP.S. I'm sorry konagold_11 but I have to write this. Although it's very clever to try to advertise through Yahoo! answers, it'd be helpful if you knew what you were talking about.
385776
It's consistency in your exercise program that's the important thing, not the weather.  Have you noticed how gyms tend to keep the same temperature all year round?
371453
Don't sweat it....Actually go ahead and sweat it! Let your trainer know that you are still sore so he or she will start warming you up slowly.  Once you get going, the soreness will subside.  The body has a way of getting rid of soreness once it senses you are starting another workout.  If you remain sore after your warm up, let your trainer know. You may be overtraining. If your trainer knows you well, he or she will know your limits.  Also, study the signs of overtraining so this doesn't happen too often.  Good luck!
674406
Maybe if you sat in front of it all day. You wouldn`t sweat as much which is part of what causes you to lose weight when you exercise. So I could see it MAYBE contributing in some very small way. I wouldn`t TOTALLY disregard it.  Good question by the way :o)
570538
What does the fan do? Make the air move to cool down hot skin?
591431
Exercise involves lots of aerobic respiration, which is WORK, esp as all the muscles are contracting=WORKING.  98.6F is an approximate temp. we do NOT stay there all the time and our temp changes all day depending what we are doing.  In fact in females who are not on the pill or other hormones, the body temp fluctuates all during the month due to the different hormones in the blood (say 96 to 99 deg F) , but 98.6F is "normal" homeostasis body temp for the "sleeping-idle person...we are close to homeostasis at this temp, but during exercise, the body temp will naturally go up, but the body wants to cool you off so you don't FRY-COOK-DENATURE all your metabolic enzymes and go into HYPERTHERMIA.  If you are in good shape you may be able to cool off better than others!\n\nThis cell respiration process during exercise produces lots of ATP and body-muscle heat, which is lost as well. Body needs to cool off from doing all this WORK!  Skin can help us with thermo-regulation in several ways.  When we sweat, the moisure of sweat plus the heat helps reduce body temp by evaporative cooling.  Also,when we get red-overheated,the blood goes to perpheral circulation in skin to bring blood-heat to the surface to be lost by convection with the air currents.  Heat can also leave skin by radiation too.  You can feel heat coming off red sun burned or fevered people.
205707
Your body is trying to get rid of excess heat.  It dilates the capilaries in your skin to allow an increased blood flow so that the blood cools faster.\n\nYou probably don't sweat enough, or it's very humid when this happens.
623451
The air temperature has less to do with calorie burning than muscle fatigue.  If it is too cool, you run the risk of damaging muscles.  That's why you stretch and warm up first..to loosen them.