From a stroke mechanics perspective, there is one major cause of shoulder problems and that is the instinctive way in which swim to make breathing easier.
从运动生理学的角度，我们可以得出一个造成肩膀伤害的主要原因，还有个能立即让你的呼吸变容易的办法。
On the third length, breathe every three strokes, with each hand-hit counting as one stroke. This is commonly called bilateral breathing.
第三个长度采用三划一换气，注意每只手的划水都算一划。这样的换气方式就是通常说的双侧呼吸。
We learned how to deal with heart attack, bleeding, breathing difficulties and heart stroke.
我们学习了怎样处理心脏病突发、流血、呼吸困难和中暑。
So, when you move from breathing every 2 strokes to every 3 strokes, don't think of it as one more stroke to hold your breath, think of it as one more stroke to exhale for.
因此，当你从每2划换气一次变为每3划一次，不要想到作为一个更多的划臂而屏住呼吸，而应想作为一个更多划臂去呼气。
Being athletic, Arnies have great potential to become fast swimmers if they can develop a longer smoother stroke with better breathing technique.
因为很健硕，这类型的泳者有很大潜力可以游得很快，如果他们的划臂又长有顺畅，呼吸技巧有所改进的话。
The WHO warns that as air quality worsens the risk increases for many diseases. These include stroke, heart disease, lung cancer, and breathing diseases such as asthma.
世界卫生组织警告说，随着空气质量恶化，很多疾病的风险也有所提高，其中包括中风、心脏疾病、肺癌以及哮喘等呼吸道疾病。
And on your non-breathing stroke, despite the undulation of the rest of your body, it is important trying to keep your head inline with your body line.
在非换气的划臂周期，虽然身体的其他部位在波动，但是头部应当保持与身体成直线的位置。
Most swimmers realise that breathing technique is a fundamental of the freestyle stroke.
大多数游泳者认识到呼吸技术是自由泳的基本功。
The problem with breathing to only one side is that it tends, over time, to make your stroke lopsided and asymmetrical.
仅采用强侧呼吸的问题时，时日一久，你的划臂会出现侧顷，且左右侧动作不对称。
Poor breathing mechanics can increase drag and reduce the effectiveness of your stroke during the breath.
不好的呼吸技术能增加阻力、减弱呼吸时的划臂效力。
There are a few things that you can do in the pool to prepare for swimming in open water; bilateral breathing, head lifting and stroke rate training.
有不少为公开水域准备的事情你可以在泳池里做，如双侧呼吸，抬头和划水频率训练。
No breathing on the first stroke.
第一次划臂时不呼吸。
But they are not stuck with single-sided breathing in training as this would cause their stroke to deteriorate.
但他们不会在训练中套牢在单侧换气上，因为这会造成他们的划臂退化。
I get water in my ears when swimming the back-stroke and I haven't learnt how to control my breathing.
游仰泳的时候我的耳朵会进水，而且我还没掌握怎么调节呼吸。
Don't lift the head at all during a non-breathing stroke, and when taking a breath, look forward, then get the head right back in line with the body.
在不呼吸的划水时不要抬头。呼吸时向前看一下，然后马上低头回到原来头身一条线的状态。
Don't lift the head at all during a non-breathing stroke, and when taking a breath, look forward, then get the head right back in line with the body.
在不呼吸的划水时不要抬头。呼吸时向前看一下，然后马上低头回到原来头身一条线的状态。
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