流汗越多意味著鍛煉越劇烈嗎?

流汗越多意味著鍛煉越劇烈嗎?

For some people, summer is the time to head indoors to exercise. But others welcome the heat as a way to sweat more and get a better workout.

對一些人來說，夏天是在室內鍛煉的時候。但也有人歡迎高溫，認為這是一種出汗更多、鍛煉效果更好的方式。

Indeed, I've long regarded the sweatiness of my exercise sessions as a sign of how hard I was pushing myself. But it turns out I've been wrong: How much you sweat doesn't necessarily correlate with how intense your workout is or how many calories you burn.

事實上，長期以來，我一直把運動過程中的出汗看作是我對自己要求有多高的一個標志。但事實證明我錯了:流汗多少并不一定與你的鍛煉強度或燃燒了多少卡路里有關。

When your body temperature rises, your eccrine glands secrete sweat, and the evaporation of moisture from your skin helps you cool off. Of course, sweating can occur for other reasons, such as stress or fear.

當你的體溫升高時，你的汗腺會分泌汗液，皮膚上的水分蒸發(fā)會幫助你降溫。當然，流汗也有其他原因，比如壓力或恐懼。

That type of sweat comes from the apocrine glands, which are located mainly in the underarm and groin.

這種汗液來自頂泌腺，主要位于腋下和腹股溝。

How much we sweat during exercise is due to a number of factors, including gender (men tend to sweat more than women) and age (younger people sweat more than older people) as well as genetics, temperature and humidity.

我們在運動中流汗的多少有很多因素，包括性別(男性比女性更容易出汗)和年齡(年輕人比老年人出汗更多)，以及基因、溫度和濕度。

Weight plays a role as well. Larger people tend to sweat more, because their bodies generate more heat.

體重也是一個因素。體型較大的人出汗較多，因為他們的身體會產生更多的熱量。

Another contributor is fitness level. Surprisingly, fit people tend to sweat sooner during exercise and more copiously than those who are less fit. Research suggests that as your fitness level improves, your body's heat-regulating system becomes more efficient, cooling you down faster and allowing you to work harder.

另一個因素是健康水平。令人驚訝的是，健康的人比那些不健康的人更容易在運動中出汗。研究表明，隨著身體健康水平的提高，身體的熱調節(jié)系統(tǒng)會變得更有效率，讓你更快地降溫，讓你更努力地工作。

Don't be misled by the loss of a few pounds after a high-sweat workout. This is simply water weight that you gain back when you rehydrate and doesn't necessarily mean you've burned lots of calories. On the flip side, don't assume that a low-sweat workout means you aren't working hard enough or burning enough calories. It could be that your sweat evaporates quickly because you're exercising in air-conditioning, near a fan or outdoors on a windy day. Or, unlike me, you simply may not sweat much.

不要被高汗運動后減掉的幾磅體重誤導。這只是你在補充水分時增加的水的重量，并不一定意味著你燃燒了很多卡路里。另一方面，不要認為低汗運動意味著你沒有努力運動或燃燒足夠的卡路里。可能是因為你在空調、風扇附近或大風天的戶外鍛煉，汗水很快就蒸發(fā)了?；蛘撸幌裎?，你可能不會流太多汗。

Whatever the case, wearing clothing made of synthetic fabrics such as polyester or Lycra can help you feel less sweaty. These pull (or wick) sweat from your skin to outer layers of the clothes, where the moisture evaporates. Cotton, on the other hand, absorbs moisture but doesn't promote evaporation. As a result, your shirt or other clothing can feel soaked and heavy after a workout.

不管是哪種情況，穿滌綸或萊卡等合成纖維面料的衣服可以幫助你減少出汗。這些汗液會把你皮膚上的汗液吸到衣服的外層，在那里水分會蒸發(fā)。另一方面，棉料吸收水分，但不促進蒸發(fā)。因此，你的襯衫或其他衣服在鍛煉后會濕透和沉重。

A drawback of polyester is that it tends to stink more than cotton after exercise. In one study, researchers collected the sweaty shirts of 26 subjects after an hour of intensive spinning. The next day, trained sniffers determined that the polyester shirts smelled worse than the cotton ones.

滌綸的一個缺點是，運動后它比棉更容易發(fā)臭。在一項研究中，研究人員收集了26名在劇烈旋轉一小時后受試者的汗?jié)褚r衫。第二天，專業(yè)的嗅探員發(fā)現滌綸襯衫的氣味比棉質襯衫更難聞。