why do people sweat more before a heavy rain ?
608753
Because the humidity levels are up, causing more moisture in the air before the actual rain.
614073
I love the rain, it is sensual.  But when it rains too many days in a row, it makes me sleepy.
499131
Sweating (also called perspiration or sometimes transpiration) is the loss of a watery fluid, consisting mainly of sodium chloride (commonly known as salt) and urea in solution, that is secreted by the sweat glands in the skin of mammals. Sweat also consist of the chemicals or odorants 2-methylphenol and 4-methylphenol.\n\nIn humans, sweating is primarily a means of temperature regulation. Evaporation of sweat from the skin surface has a cooling effect due to the latent heat of evaporation of water. Hence, in hot weather, or when the individual's muscles heat up due to exertion, more sweat is produced. Sweating is increased by nervousness and nausea and decreased by cold.
1030403
I think people wear underclothing to absorb the sweat and to protect their clothes from stains.  Underclothing also creates modesty as well.
919589
Winds pick up water vapor as they blow across oceans, and drop the water as rain as they blow across islands and  continents, generally losing more water as the elevation rises.  \n\nAs the air and clouds blow over higher ground, the temperature drops and causes the water to precipitate, forming rain.  There is a "rain shadow," on the leeward side of the higher ground in the center of an island or continent, because the clouds drop the rain on the "windward" side of a mountain (side toward the wind), leaving the "leeward" side drier (side that's sheltered from the wind).\n\nThe winds blowing across the ocean pick up water and bring rain to India, bringing more rain as they first come to the land, raining as the elevation rises, and then raining less after they cross the higher ground in the central parts of India. \n\nHope this helps.
350316
A reading of 100 percent relative humidity means that the air is totally saturated with water vapor and cannot hold any more, creating the possibility of rain. This doesn't mean that the relative humidity must be 100 percent in order for it to rain -- it must be 100 percent where the clouds are forming, but the relative humidity near the ground could be much less.\n\nHumans are very sensitive to humidity, as the skin relies on the air to get rid of moisture. The process of sweating is your body's attempt to keep cool and maintain its current temperature. If the air is at 100-percent relative humidity, sweat will not evaporate into the air. As a result, we feel much hotter than the actual temperature when the relative humidity is high. If the relative humidity is low, we can feel much cooler than the actual temperature because our sweat evaporates easily, cooling us off.
175960
There are two answers to this question.\nThe short answer: You get more wet by running.  \n\nImagine yourself standing still in the rain, and for simplicity, the rain is falling straight down.  A certain amount of rain falls on you in a given second.  So you start to run...  By running, you still have the same amount of rain falling directly on you PLUS an additional amount of rain that YOU ran INTO.  That's why your thighs get so damn wet while the backs are relatively dry.\n\nSo yes, you get more wet by running than by standing still. \n\nHowever, now think about WHY you are running.  Probably, you're bolting for the door to your house or some shelter.\n\nIf you stand still, or walk really slowly to the door, you'll get soaked.  However, if you run for it you will briefly get more wet (by running "into" rain), but possibly less wet overall because you reduced the amount of time you're in the rain.  \n\nSo while the act of running will get you wetter at a faster rate, the outcome can let you be less wet overall if there is shelter close by.
875267
by the effect of wind.\n      the rain comes from too height & there the speed of air is very fast 'n' due to it the angle deflected.this deflected angle is very short but the height is too large so it seems like a big deflection.
239587
good question! i agree that if you run you get shelter more quickly, but actually as i seen on tv, as they tested this matter... the outcome was: \n\nif you run, you get more wet than when you walk.\nso i guess, my boots were made for walking! *Ü*
1038732
So that they can have a nice dry spot - if they waited until after it had rained to lie down then they would get wet tummys!\n\nI'm not sure how they know when it's going to rain though...maybe some kind of 6th sense?!
625331
Usually, heavy rain stroms are always accompanied by thunderstorms.  The worst storms occur when warm, moist air meets with cool, dry air.  The greater the difference, the greater the thunderstorm and rainfall.
373459
The rain drops because of gravity.
597267
Lower pressure will result in more "convection," or vertical movement of moisture.  So in general, the lower the pressure the better chance of precipitation.
1129960
Check out the Myth Buster show. They proved the answer is run. One gets wetter if one runs in the rain!
936201
Because in the summer, we lose a lot of sweat yes? =] so, this sweat has to be replaced with water from the body, meaning why we drink more in the summer, BUT, in the winter, we hardly sweat, meaning a build up of water, and bingo, out it comes, its all homeostasis, blood and body temperatures =], Basically, the water in our body cant escape  through the sweat glands, well, cus its winter, meaning it just builds up and puts everything out of balance. So we pee more. In the summer we dont pee asmuch cus water is lost through sweat.
261299
Some people sweat in different places when they are nervous.  Some get sweaty palms, armpits or forehead.  You get a sweaty bum.  Perfectly natural, I'm sure.  If it bothers you and you want to find the cause or possible cure, see a doctor.  Otherwise......relax.
902732
because our perspiration, which is the way humans cool there bodies when the temperature rises, cant evaporate. because the humidity is already  close to reaching the saturation point