A hearty laugh relieves physical tension, leaving your muscles relaxed for over half an hour.
开怀大笑可以缓解身体紧张，让你的肌肉放松半个多小时。
Usually, I don't spare time for exercise, but I value the physical education class at school.
通常，我不会花时间来做运动，但是我很重视学校的体育课。
The scientist is engaged in serious research to uncover the very nature of the physical world.
这位科学家正在进行认真的研究，以揭示物理世界的本质。
To free ourselves from physical and mental tensions, we all need deep thought and inner quietness.
为了把自己从身体和精神的紧张中解放出来，我们每个人都需要进行深刻思考，并保持内心平静。
But if we want our kids to realize their full physical, learning and social ability, sleep is important.
但如果我们想让我们的孩子充分发挥他们身体的、学习的和社交的能力，睡眠是很重要的。
But both studies show that long life isn't just a matter of your physical health but of your mental health.
但这两项研究都表明，长寿不仅关系到你的身体健康，还关系到你的精神健康。
These techniques help you recognize how you are feeling and shift to a more positive emotional, mental and physical state.
这些技巧可以帮助你认识到自己的感受，并将自己的情绪、精神和身体状态转变为更积极的状态。
In my opinion, physical fitness and mental attitude are overriding factors to drive athletes to succeed in their particular sports.
在我看来，身体健康和心态是驱动运动员在其特定的运动项目中取得成功的首要因素。
Ten minutes of activity per day is a good start, says Marcus Jackovitz, DPT, a physical therapist at the University of Miami Hospital.
迈阿密大学附属医院的物理治疗博士、理疗师马库斯·杰克维兹说，每天运动十分钟是一个好的开始。
Optimism's benefits for physical health also extend beyond heart health, such as improved immune system function and increased life span.
乐观对身体健康的益处不仅限于心脏健康，还包括改善免疫系统功能和延长寿命。
These are qualities that schoolchildren can, and should, acquire through a variety of demanding individual activities in physical education.
这些素质是学生能够而且应该通过体育教学中各种各样要求很高的个人活动中获得的。
Maintaining a level of daily physical activity may help mental functioning, says Carl Cotman, a neuroscientist at the University of California at Irvine.
加州大学欧文分校的神经学家卡尔·科特曼表示，每天保持一定的体育锻炼可以促进心理机能。
While Pierre Curie devoted himself chiefly to the physical study of the new radiations, Marie Curie struggled to obtain pure radium in the metallic state.
当皮埃尔·居里主要致力于新放射物的物理研究时，玛丽·居里却在努力提取金属态的纯镭。
Finally, younger ecologists have found ecological problems involving behavior and life-history adaptations more attractive than measuring physical constants.
最后，年轻一代的生态学家发现，涉及行为和生活史适应的生态问题比测量物理常量更有吸引力。
Although they will be excited by the struggle for first place, they will also identify with the ordinary person trying to fulfill his or her physical potential.
虽然他们会为争夺第一名而兴奋，但他们也会认同那些努力发挥自己身体潜力的普通人。
Setting aside more money for these activities will help schools to develop better physical education programs and encourage more students to participate in them.
为这些活动拨出更多的钱将有助于学校发展更好的体育项目，并鼓励更多的学生参与其中。
If you are someone who loves to show physical affection, you should not be afraid to show it or drastically change your behaviors—just ask for consent beforehand!
如果你是一个喜欢表现身体亲近的人，你不应该害怕表现出来，或者彻底改变你的行为——只要事先征得对方允许就好了！
Both chemists were sufficiently farsighted to leave gaps where their analyses of periodic physical and chemical properties indicated that new elements should be located.
这两位化学家都非常有远见，他们对周期性的物理性质和化学性质进行分析，并在预示应该出现新元素的地方留下了空位。
With fresh air to breathe, less crowded living conditions, and more chances to take part in physical exercise, children in the country are usually healthier than those in the city.
乡下的孩子有新鲜的空气可以呼吸，生活环境不那么拥挤，有更多的机会参加体育锻炼，所以他们通常比城市中的孩子健康。
According to a newly published study, cats seem to be able to predict the location of hiding prey using both their ears and an inborn understanding of how the physical world works.
根据一项新发表的研究，猫似乎能够通过它们的耳朵和与生俱来的对物质世界运作方式的理解来预测隐藏猎物的位置。
Modern dance seeks to show how deep emotions and the music itself, how these intangible attributes can affect and inspire physical movement, and how movement can convey emotions to the audience.
现代舞试图展示情感和音乐本身的深度，这些无形的属性如何影响和激发身体的动作，以及动作如何将情感传达给观众。
With the help of her teacher, Helen Keller had the courage and determination to rise above her physical disability.
在老师的帮助下，海伦·凯勒有了勇气和决心战胜自身的生理障碍。
Menstruation (a period) is a major stage of puberty in girls; it's one of the many physical signs that a girl is turning into a woman.
月经（例假）的来到是女孩青春期中经历的一个重要阶段；它是女孩变为女人的众多生理变化之一。
There are steps you can take to help reduce abdominal fat and maintain lean muscle mass as you age in order to protect both your physical and mental wellbeing.
你可以在年龄增长的过程中采取一些措施来减少腹部脂肪，保持精瘦肌肉含量，从而维持你的身心健康。
"Collaboration, negotiation, decision making, creativity, leadership, and increased physical activity are just some of the skills and benefits children gain through play," they wrote.
他们写道：“协作、谈判、决策、创造力、领导力和增强的运动能力只是孩子们通过玩耍获得的一些技能和好处。”
Many come through periods of stress with more physical and mental vigor than they had before.
许多人在经历了一段时间的压力后，身心都比以前更有活力。
Don't persist with a task if you feel too much stress because it may harm your mental and physical health.
如果一项任务给你造成了很大压力，不要强行坚持，因为这可能会影响你的身心健康。
It is advisable for people to take regular exercise for it is crucial to people's physical and mental health.
定期运动是明智的，因为它对于人的身心健康而言非常重要。
Seeing and talking with one another in close physical proximity makes possible a subtle exchange of ideas and feelings.
近距离的彼此观察和相互交谈使人们可以进行一种微妙的观点交流和情感互动。
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