Exercise When you exercise, your brain releases a chemical called endorphins.
运动当你做运动时，大脑会产生一种叫做“内啡肽”的化学物质。
When you exercise, you breathe more deeply and get more oxygen into your lungs with each breath.
你在运动的时候，做了更多的深呼吸，每次呼吸吸入肺部的氧气都会更多。
It really gets the stress out of your system and gives you some quiet time to think when you exercise.
它让你的压力荡然无存，同时，运动时你也可以或许静静地思虑。
Uh, sounds dangerous especially when you exercise in breathe to your mouth. What if my tongue freezes?
听起来很危险，特别是用嘴呼吸时，如果我的舌头结冰的怎么办？
When you exercise a muscle, it gets bigger. You should only be doing sit-ups if you want a bigger stomach.
当你运动你的肌肉，肌肉就变大。如果你想要大肚球才应该做仰卧起坐。
When you exercise, endorphins are released which make you feel more chirpy and also reduce the pangs for food.
当你运动时，一种叫脑内啡的物质被释放，让你感觉特别有活力，同时能降低你的食欲。
When you exercise your critical thinking, you give yourself the opportunity to correct false beliefs and thus refine your learning.
在你锻炼批判思维时，你就有机会纠正错误观点，进而优化学习效果。
When you exercise the brain releases endorphins that put you a better mood, make you feel happy and isn't that what life is all about?
在锤炼时，人们的大脑会开释内啡肽。内啡肽会使人心境高兴、觉得愉快。那不正是人们所期看的生涯吗？
When you exercise little, the aging process of your body will accelerate, and you are vulnerable to physical and psychological problems.
你的活动量很小，机体老化的过程就越快，你就越容易面临生理和心理方面的种种问题。
Monitoring helps you find out what happens to your blood glucose when you eat certain foods, when you exercise, or when you lose or gain weight.
当你吃了一定的食物、参加了体育锻炼、或者体重减轻或体重增加时，早晨检测能帮助你发现你血液中的葡糖糖变化。
Exercise When you exercise, your brain releases a chemical called endorphins. This chemical makes you feel happier. That is just another reason why exercise is good for you.
运动当你做运动时，大脑会产生一种叫做“内啡肽”的化学物质。这种物质让让你感到开心。这是另一个运动对你有好处的原因。
Many teenagers are surprised to learn that when you exercise, your body produces some chemicals that make you feel relaxed and increase your ability to concentrate when you study.
许多青少年听说体育锻炼可以使身体产生帮助放松精神、促进集中注意力的化学物质时都觉得吃惊。
When you exercise deliberate control to suppress urges, suppress thoughts, make decisions, resist temptations, or summon the will to do something, you are depleting a limited supply.
当你下意识地抑制自己的冲动、想法、下意识地做出决定、抵制诱惑，全力以赴，你就会逐渐疲惫。
Your brain gets more oxygen when you do exercise like a 20-minute walk.
当你进行像步行20分钟这样的运动时，你的大脑会获得更多的氧气。
Exercise even when you are tired.
即使累了也要运动。
It's great when your clothes fit better, you can lift heavier things or take exercise longer.
如果你的衣服合身就更好了，这样的话你可以举起更重的东西，或者运动更长的时间。
These tips can help you safely - and enjoyably - exercise when the weather turns chilly.
这些贴士可以帮助你在天气转冷是安全愉快地锻炼。
When starting a new exercise plan you need to balance between making it too easy and forgetting about conditioning it or making it too hard and giving up out of frustration.
开始新的锻炼计划前，你必须在两者之间找到平衡点：要么太过容易忘记了调整；抑或太难了挫败多次而放弃。
When you first try to make exercise a daily habit, chances are, your body won't be used to that kind of stress.
当你第一次试着去养成每天锻炼的习惯时，你的身体也许还不能适应那种成都的压力。
Motivation is what drives you toward a goal, what keeps you going when things get tough, the reason you get up early to exercise or work late to finish a project.
动机驱使你向目标前进，并且在遇到困难时促使你继续向前，是你为锻炼而早早起床或者为完成任务而加班加点的缘由。
When exercise is play, you’re not forcing yourself to do it —you *want* to do it.
当锻炼是玩儿的时候，你不会逼自己做，而是你想要做。
Mild pain: you feel this type of pain when you start to exercise but it usually goes away as you warm up and continue running.
轻度疼痛：再开始锻炼时会感到这种类型的疼痛，但当开始热身并继续跑步时这种感觉就会随之消失了。
The site also provides simple but effective exercise techniques you can use when sitting at your office desk.
这个网站也提供简单有效的锻炼技巧，让你可以在办公桌前锻炼身体。
Answer: it's normal to feel hungry when you start a new exercise regimen or you increase your exercise frequency or intensity.
答案：当开始一种新的锻炼方法或增加锻炼频率或紧张程度时，有饥饿感是很正常的。
An increasing body of research reveals that exercise does next to nothing for you when it comes to losing weight.
越来越多的研究表明，锻炼身体对减肥没有起到丝毫的作用。
What advice would you give us when we know we should exercise, but we just don’t feel up for it?
最近两个5年级学生米歇尔和卡森问我：我们知道需要锻炼，但是还没打算开始，您建议我们如何做呢？
What advice would you give us when we know we should exercise, but we just don’t feel up for it?
最近两个5年级学生米歇尔和卡森问我：我们知道需要锻炼，但是还没打算开始，您建议我们如何做呢？
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