“不要再跷二郎腿”上热搜，网友：看完立马坐直了

当你点开这篇文章的时候，是不是正在跷着二郎腿呢？

近日，多个与“跷二郎腿”相关的话题冲上热搜，引发广大网友热烈讨论。

The topic of  "crossing your legs" has been hotly discussed on the internet recently. The truth is that crossing one leg over the other, a common sitting posture preferred by many people, may actually do harm to one’s health.

不管是在日常工作还是生活中，许多人可能都会不自觉地就跷起了二郎腿。

Whether it is at the office, in a waiting room, or relaxing at home, many people’s go-to posture is one leg over the other, crossed at the knee. If you’re like many of us, you spend too many hours of your day seated and sedentary, and for most of that time, you have crossed your legs for comfort.

sedentary  /ˈsednteri/ adj.  需要久坐的

跷二郎腿的坐姿或许会让人感到放松，其带来的危害却有不少。

许多网友表示，虽然知道跷二郎腿的危害，但总是控制不住自己的双腿。

为什么人们爱跷二郎腿

那么，为什么明明知道跷二郎腿不好，大家却还喜欢这么做呢？

这是因为，人类的身体本能会追求舒适、放松的姿势。人坐在椅子上的时候，支撑面很窄，如果椅子低，还可能出现身体不稳定的情况。

而跷二郎腿的时候，身体支撑面积增大，能够放松一条腿的肌肉群，缓解腿部和足底肌肉的压力。

当人们处于坐姿状态时，跷二郎腿还可以调节身体重心，坐起来会更稳当。

在美国网站最佳生活（Best Life）上发布的一篇文章中，医学专家Steven Weiniger认为，跷二郎腿时，人们正在缓解不适：

When you cross your legs, you're trying to improve the mechanics of the lower back and take the strain off. Put another way: you're trying to mitigate discomfort in all its forms. Shifting into a cross-legged position is your mind subconsciously preventing your body from ending up in high-grade discomfort.

当你跷二郎腿的时候，实际上正在调节背部机能、缓解压力。换句话说，你正在试图缓解各种形式的不适。要是不自觉地就跷起了二郎腿，说明你的身体正阻止你陷入一个高度不适的状态。

而在不少影视作品中，也能看到剧中人物跷二郎腿的片段。

这种坐姿比日常坐姿要占据更多的空间，通常是一种权力和气场的彰显。

At the same time, consciously crossing your legs can be a total a power move.  Crossing your legs takes up more space than sitting regularly—and taking up more space is seen as dominant. 

跷二郎腿有什么危害

跷二郎腿会影响骨盆结构，诱发骨盆倾斜、高低肩、长短腿等问题。

据外媒报道，有研究发现，如果人们一天跷二郎腿的时间超过3小时，身体前倾和肩部变圆的可能性就更大。该研究基于人们对自己跷二郎腿时间的评估。

One study found that people who sat with their legs crossed for more than three hours a day were more likely to lean forward and to round their shoulders. But the research relied on people’s own estimations of how long they crossed their legs for. 

另外，如果长期处于跷二郎腿的姿势，一侧的肌肉会一直处于紧绷的状态，肌肉力量不平衡，腰椎压力不均，容易产生腰肌劳损、腰椎间突出、脊柱侧弯等问题，造成腰背不适。

When we cross our legs, we are putting compression and pressure on our leg and knee joints and nerves. The way we sit is a huge determinant of our health and the way our body moves and functions. Sitting with our legs crossed leaves your hips uneven and forces your pelvic bone to rotate. 

跷二郎腿时，我们的腿部、膝关节和神经都会受到压迫。在很大程度上，坐姿会影响我们的健康和身体运作方式。如果采用跷二郎腿的坐姿，会导致臀部受力不均，骨盆扭转。

Therefore, the longer you sit in this uneven position, the more pressure is placed on your knee and spine, increasing the likelihood that it will develop into a long-term issue.

所以，跷二郎腿坐着的时间越长，膝盖和脊椎承受的压力就越大。长此以往，很容易诱发健康问题。

此外，据北京科协，一项2007年的研究曾得出跷二郎腿会造成血压升高的结论：

当坐姿为双腿在膝盖处交叉时，血压升高；而在脚踝处交叉双腿时，却未发现血压明显升高。

 

由此可见，跷二郎腿不仅会导致肉眼可见的体态变化，也影响着身体的内平衡健康。

培养健康的坐姿习惯

当不可避免需要久坐时，良好的坐姿习惯就显得尤为重要。下面这些坐姿小贴士，快快收好吧。

Switch sitting positions often

经常变换坐姿

Take brief walks around your office or home

避免久坐，站起来走一走

Gently stretch your muscles every so often to help relieve muscle tension

拉伸肌肉，缓解肌肉紧张

keep your feet on the floor, with your ankles in front of your knees

双脚着地，脚踝位于膝盖前面

Relax your shoulders; they should not be rounded 

放松肩部，避免圆肩驼背

Keep your elbows in close to your body. They should be bent between 90 and 120 degrees

手肘与身体呈90度至120度的夹角

Make sure that your back, thighs and hips are fully supported

确保大腿、臀部和背部获得充分的支撑

图源：MedlinePlus

你有跷二郎腿的习惯吗？留言分享给CD君吧。

编辑：李金昳

实习生：闫庚乾

来源：央视新闻 北京科协 BBC 最佳生活 MedlinePlus toc.md.com

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