而与此同时，我依旧缩在被窝中，无论妈妈如何喊叫，就是不肯探出头来，“五分钟，再睡五分钟啦!”我懒洋洋地应付着妈妈，“不行!7点半了，你看你们班的班长6点就起床读书、背英语单词了!”“好，我起……”我极不情愿且迷迷糊糊地穿衣服，慢吞吞地洗脸刷牙，心想：反正今天运动会，晚去一会又不会被发现。我这拖延症，早已深入我体内，无药可救了，正因为如此，我无论做什么事，都要比别人慢一步，而且显得慌慌张张。

这天是我们学校一年一度的春季运动会，运动场上锣鼓齐鸣、人声鼎沸，正当我偷偷摸摸地从人群中混进我们班集合点时，突然一个声音从背后大声喝住了我，“你还知道来呀!”吓得我一怔，急忙回头看去，原来是班长，“班长，我错了，下次一定早来。”“哼!”班长恶狠狠地说“你真是个拖油瓶!”这时，我也不乐意了：“怎么了，不就晚来一会吗!”“晚来一会?你的项目都结束了!”听到这话，我脑子“嗡”地一声，仿佛被人重重锤了一下似的，顿时清醒了许多，原来我是运动员，要参加女子接力赛的，能为班集体出一份力，是我的梦想啊，可如今我竟然拖到现在才来，一切都结束了，我的脸顿时通红。“啊，我是……我是……”此时我真想找个地缝钻进去……

运动会结束了，我们班在全年级中垫底了，听到这个消息，所有人目光都落到了我身上，我低下头，无地自容，连班主任也来找我谈话，语重心长对我说：“你要注意你自身的错误啊。”我的心理防线突然崩溃了，“嗯，张老师，我知道我错了，我一定改!”我的眼泪不由自主地掉下来，我真是恨我自己呀，我恨自己的“懒”，恨自己的拖延症。

从那刻起，我开始努力地过好每一天，刚刚开始努力时，确实十分痛苦，早早起床时，痛彻心扉，改掉自己的毛病时，十分难过，不情不愿，而当我慢慢适应时，不知从何时开始，我爱上了这种努力而又认真的生活态度。我第一次觉得，自己是班级的一员，我也要追上他们的脚步，我要与他们一起奋斗!

努力，不一定成功，但你一定会感谢并爱上那个努力奋斗、拼搏的自己!

火ted演讲稿篇2

what i'd like to do today is talk about one of my favorite subjects, and that is the neuroscience of sleep.

now, there is a sound -- (alarm clock) -- aah, it worked -- a sound that is desperately, desperately familiar to most of us, and of course it's the sound of the alarm clock. and what that truly ghastly, awful sound does is stop the single most important behavioral experience that we have, and that's sleep. if you're an average sort of person, 36 percent of your life will be spent asleep, which means that if you live to 90, then 32 years will have been spent entirely asleep.

now what that 32 years is telling us is that sleep at some level is important. and yet, for most of us, we don't give sleep a second thought. we throw it away. we really just don't think about sleep. and so what i'd like to do today is change your views, change your ideas and your thoughts about sleep. and the journey that i want to take you on, we need to start by going back in time.

"enjoy the honey-heavy dew of slumber." any ideas who said that? shakespeare's julius caesar. yes, let me give you a few more quotes. "o sleep, o gentle sleep, nature's soft nurse, how have i frighted thee?" shakespeare again, from -- i won't say it -- the scottish play. [correction: henry iv, part 2] (laughter) from the same time: "sleep is the golden chain that ties health and our bodies together." extremely prophetic, by thomas dekker, another elizabethan dramatist.

but if we jump forward 400 years, the tone about sleep changes somewhat. this is from thomas edison, from the beginning of the 20th century. "sleep is a criminal waste of time and a heritage from our cave days." bang. (laughter) and if we also jump into the 1980s, some of you may remember that margaret thatcher was reported to have said, "sleep is for wimps." and of course the infamous -- what was his name? -- the infamous gordon gekko from "wall street" said, "money never sleeps."

what do we do in the 20th century about sleep? well, of course, we use thomas edison's light bulb to invade the night, and we occupied the dark, and in the process of this occupation, we've treated sleep as an illness, almost. we've treated it as an enemy. at most now, i suppose, we tolerate the need for sleep, and at worst perhaps many of us think of sleep as an illness that needs some sort of a cure. and our ignorance about sleep is really quite profound.

why is it? why do we abandon sleep in our thoughts? well, it's because you don't do anything much while you're asleep, it seems. you don't eat. you don't drink. and you don't have sex. well, most of us anyway. and so therefore it's -- sorry. it's a complete waste of time, right? wrong. actually, sleep is an incredibly important part of our biology, and neuroscientists are beginning to explain why it's so very important. so let's move to the brain.

now, here we have a brain. this is donated by a social scientist, and they said they didn't know what it was, or indeed how to use it, so -- (laughter) sorry. so i borrowed it. i don't think they noticed. okay. (laughter)

the point i'm trying to make is that when you're asleep, this thing doesn't shut down. in fact, some areas of the brain are actually more active during the sleep state than during the wake state. the other thing that's really important about sleep is that it doesn't arise from a single structure within the brain, but is to some extent a network property, and if we flip the brain on its back -- i love this little bit of spinal cord here -- this bit here is the hypothalamus, and right under there is a whole raft of interesting structures, not least the biological clock. the biological clock tells us when it's good to be up, when it's good to be asleep, and what that structure does is interact with a whole raft of other areas within the hypothalamus, the lateral hypothalamus, the ventrolateral preoptic nuclei. all of those combine, and they send projections down to the brain stem here. the brain stem then projects forward and bathes the cortex, this wonderfully wrinkly bit over here, with neurotransmitters that keep us awake and essentially provide us with our consciousness. so sleep arises from a whole raft of different interactions within the brain, and essentially, sleep is turned on and off as a result of a range of

okay. so where have we got to? we've said that sleep is complicated and it takes 32 years of our life. but what i haven't explained is what sleep is about. so why do we sleep? and it won't surprise any of you that, of course, the scientists, we don't have a consensus. there are dozens of different ideas about why we sleep, and i'm going to outline three of those.

the first is sort of the restoration idea, and it's somewhat intuitive. essentially, all the stuff we've burned up during the day, we restore, we replace, we rebuild during the night. and indeed, as an explanation, it goes back to aristotle, so that's, what, 2,300 years ago. it's gone in and out of fashion. it's fashionable at the moment because what's been shown is that within the brain, a whole raft of genes have been shown to be turned on only during sleep, and those genes are associated with restoration and metabolic pathways. so there's good evidence for the whole restoration hypothesis.

what about energy conservation? again, perhaps intuitive. you essentially sleep to save calories. now, when you do the sums, though, it doesn't really pan out. if you compare an individual who has slept at night, or stayed awake and hasn't moved very much, the energy saving of sleeping is about 110 calories a night. now, that's the equivalent of a hot dog bun. now, i would say that a hot dog bun is kind of a meager return for such a complicated and demanding behavior as sleep. so i'm less convinced by the energy conservation idea.

but the third idea i'm quite attracted to, which is brain processing and memory consolidation. what we know is that, if after you've tried to learn a task, and you sleep-deprive individuals, the ability to learn that task is smashed. it's really hugely attenuated. so sleep and memory consolidation is also very important. however, it's not just the laying down of memory and recalling it. what's turned out to be really exciting is that our ability to come up with novel solutions to complex problems is hugely enhanced by a night of sleep. in fact, it's been estimated to give us a threefold advantage. sleeping at night enhances our creativity. and what seems to be going on is that, in the brain, those neural connections that are important, those synaptic connections that are important, are linked and strengthened, while those that are less important tend to fade away and be less important.

okay. so we've had three explanations for why we might sleep, and i think the important thing to realize is that the details will vary, and it's probable we sleep for multiple different reasons. but sleep is not an indulgence. it's not some sort of thing that we can take on board rather casually. i think that sleep was once likened to an upgrade from economy to business class, you know, the equiavlent of. it's not even an upgrade from economy to first class. the critical thing to realize is that if you don't sleep, you don't fly. essentially, you never get there, and what's extraordinary about much of our society these days is that we are desperately sleep-deprived.

so let's now look at sleep deprivation. huge sectors of society are sleep-deprived, and let's look at our sleep-o-meter. so in the 1950s, good data suggests that most of us were getting around about eight hours of sleep a night. nowadays, we sleep one and a half to two hours less every night, so we're in the six-and-a-half-hours-every-night league. for teenagers, it's worse, much worse. they need nine hours for full brain performance, and many of them, on a school night, are only getting five hours of sleep. it's simply not enough. if we think about other sectors of society, the aged, if you are aged, then your ability to sleep in a single block is somewhat disrupted, and many sleep, again, less than five hours a night. shift work. shift work is extraordinary, perhaps 20 percent of the working population, and the body clock does not shift to the demands of working at night. it's locked onto the same light-dark cycle as the rest of us. so when the poor old shift worker is going home to try and sleep during the day, desperately tired, the body clock is saying, "wake up. this is the time to be awake." so the quality of sleep that you get as a night shift worker is usually very poor, again in that sort of five-hour region. and then, of course, tens of millions of people suffer from jet lag. so who here has jet lag? well, my goodness gracious. well, thank you very much indeed for not falling asleep, because that's what your brain is craving.

one of the things that the brain does is indulge in micro-sleeps, this involuntary falling asleep, and you have essentially no control over it. now, micro-sleeps can be sort of somewhat embarrassing, but they can also be deadly. it's been estimated that 31 percent of drivers will fall asleep at the wheel at least once in their life, and in the u.s., the statistics are pretty good: 100,000 accidents on the freeway have been associated with tiredness, loss of vigilance, and falling asleep. a hundred thousand a year. it's extraordinary. at another level of terror, we dip into the tragic accidents at chernobyl and indeed the space shuttle challenger, which was so tragically lost. and in the investigations that followed those disasters, poor judgment as a result of extended shift work and loss of vigilance and tiredness was attributed to a big chunk of those disasters.

so when you're tired, and you lack sleep, you have poor memory, you have poor creativity, you have increased impulsiveness, and you have overall poor judgment. but my friends, it's so much worse than that.

(laughter)

if you are a tired brain, the brain is craving things to wake it up. so drugs, stimulants. caffeine represents the stimulant of choice across much of the western world. much of the day is fueled by caffeine, and if you're a really naughty tired brain, nicotine. and of course, you're fueling the waking state with these stimulants, and then of course it gets to 11 o'clock at night, and the brain says to itself, "ah, well actually, i need to be asleep fairly shortly. what do we do about that when i'm feeling completely wired?" well, of course, you then resort to alcohol. now alcohol, short-term, you know, once or twice, to use to mildly sedate you, can be very useful. it can actually ease the sleep transition. but what you must be so aware of is that alcohol doesn't provide sleep, a biological mimic for sleep. it sedates you. so it actually harms some of the neural proccessing that's going on during memory consolidation and memory recall. so it's a short-term acute measure, but for goodness sake, don't become addicted to alcohol as a way of getting to sleep every night.

another connection between loss of sleep is weight gain. if you sleep around about five hours or less every night, then you have a 50 percent likelihood of being obese. what's the connection here? well, sleep loss seems to give rise to the release of the hormone ghrelin, the hunger hormone. ghrelin is released. it gets to the brain. the brain says, "i need carbohydrates," and what it does is seek out carbohydrates and particularly sugars. so there's a link between tiredness and the metabolic predisposition for weight gain.

stress. tired people are massively stressed. and one of the things of stress, of course, is loss of memory, which is what i sort of just then had a little lapse of. but stress is so much more. so if you're acutely stressed, not a great problem, but it's sustained stress associated with sleep loss that's the problem. so sustained stress leads to suppressed immunity, and so tired people tend to have higher rates of overall infection, and there's some very good studies showing that shift workers, for example, have higher rates of cancer. increased levels of stress throw glucose into the circulation. glucose becomes a dominant part of the vasculature and essentially you become glucose intolerant. therefore, diabetes 2. stress increases cardiovascular disease as a result of raising blood pressure. so there's a whole raft of things associated with sleep loss that are more than just a mildly impaired brain, which is where i think most people think that sleep loss resides.

so at this point in the talk, this is a nice time to think, well, do you think on the whole i'm getting enough sleep? so a quick show of hands. who feels that they're getting enough sleep here? oh. well, that's pretty impressive. good. we'll talk more about that later, about what are your tips.

so most of us, of course, ask the question, "well, how do i know whether i'm getting enough sleep?" well, it's not rocket science. if you need an alarm clock to get you out of bed in the morning, if you are taking a long time to get up, if you need lots of stimulants, if you're grumpy, if you're irritable, if you're told by your work colleagues that you're looking tired and irritable, chances are you are sleep-deprived. listen to them. listen to yourself.

what do you do? well -- and this is slightly offensive -- sleep for dummies: make your bedroom a haven for sleep. the first critical thing is make it as dark as you possibly can, and also make it slightly cool. very important. actually, reduce your amount of light exposure at least half an hour before you go to bed. light increases levels of alertness and will delay sleep. what's the last thing that most of us do before we go to bed? we stand in a massively lit bathroom looking into the mirror cleaning our teeth. it's the worst thing we can possibly do before we went to sleep. turn off those mobile phones. turn off those computers. turn off all of those things that are also going to excite the brain. try not to drink caffeine too late in the day, ideally not after lunch. now, we've set about reducing light exposure before you go to bed, but light exposure in the morning is very good at setting the biological clock to the light-dark cycle. so seek out morning light. basically, listen to yourself. wind down. do those sorts of things that you know are going to ease you off into the honey-heavy dew of slumber.

okay. that's some facts. what about some myths?

teenagers are lazy. no. poor things. they have a biological predisposition to go to bed late and get up late, so give them a break.

we need eight hours of sleep a night. that's an average. some people need more. some people need less. and what you need to do is listen to your body. do you need that much or do you need more? simple as that.

old people need less sleep. not true. the sleep demands of the aged do not go down. essentially, sleep fragments and becomes less robust, but sleep requirements do not go down.

and the fourth myth is, early to bed, early to rise makes a man healthy, wealthy and wise. well that's wrong at so many different levels. (laughter) there is no, no evidence that getting up early and going to bed early gives you more wealth at all. there's no difference in socioeconomic status. in my experience, the only difference between morning people and evening people is that those people that get up in the morning early are just horribly smug.

(laughter) (applause)

okay. so for the last part, the last few minutes, what i want to do is change gears and talk about some really new, breaking areas of neuroscience, which is the association between mental health, mental illness and sleep disruption. we've known for 130 years that in severe mental illness, there is always, always sleep disruption, but it's been largely ignored. in the 1970s, when people started to think about this again, they said, "yes, well, of course you have sleep disruption in schizophrenia because they're on anti-psychotics. it's the anti-psychotics causing the sleep problems," ignoring the fact that for a hundred years previously, sleep disruption had been reported before anti-psychotics.

so what's going on? lots of groups, several groups are studying conditions like depression, schizophrenia and bipolar, and what's going on in terms of sleep disruption. we have a big study which we published last year on schizophrenia, and the data were quite extraordinary. in those individuals with schizophrenia, much of the time, they were awake during the night phase and then they were asleep during the day. other groups showed no 24-hour patterns whatsoever. their sleep was absolutely smashed. and some had no ability to regulate their sleep by the light-dark cycle. they were getting up later and later and later and later each night. it was smashed.

so what's going on? and the really exciting news is that mental illness and sleep are not simply associated but they are physically linked within the brain. the neural networks that predispose you to normal sleep, give you normal sleep, and those that give you normal mental health are overlapping. and what's the evidence for that? well, genes that have been shown to be very important in the generation of normal sleep, when mutated, when changed, also predispose individuals to mental health problems. and last year, we published a study which showed that a gene that's been linked to schizophrenia, which, when mutated, also smashes the sleep. so we have evidence of a genuine mechanistic overlap between these two important systems.

other work flowed from these studies. the first was that sleep disruption actually precedes certain types of mental illness, and we've shown that in those young individuals who are at high risk of developing bipolar disorder, they already have a sleep abnormality prior to any clinical diagnosis of bipolar. the other bit of data was that sleep disruption may actually exacerbate, make worse the mental illness state. my colleague dan freeman has used a range of agents which have stabilized sleep and reduced levels of paranoia in those individuals by 50 percent.

so what have we got? we've got, in these connections, some really exciting things. in terms of the neuroscience, by understanding the neuroscience of these two systems, we're really beginning to understand how both sleep and mental illness are generated and regulated within the brain. the second area is that if we can use sleep and sleep disruption as an early warning signal, then we have the chance of going in. if we know that these individuals are vulnerable, early intervention then becomes possible. and the third, which i think is the most exciting, is that we can think of the sleep centers within the brain as a new therapeutic target. stabilize sleep in those individuals who are vulnerable, we can certainly make them healthier, but also alleviate some of the appalling symptoms of mental illness.

so let me just finish. what i started by saying is take sleep seriously. our attitudes toward sleep are so very different from a pre-industrial age, when we were almost wrapped in a duvet. we used to understand intuitively the importance of sleep. and this isn't some sort of crystal-waving nonsense. this is a pragmatic response to good health. if you have good sleep, it increases your concentration, attention, decision-making, creativity, social skills, health. if you get sleep, it reduces your mood changes, your stress, your levels of anger, your impulsivity, and your tendency to drink and take drugs. and we finished by saying that an understanding of the neuroscience of sleep is really informing the way we think about some of the causes of mental illness, and indeed is providing us new ways to treat these incredibly debilitating conditions.

jim butcher, the fantasy writer, said, "sleep is god. go worship." and i can only recommend that you do the same.

thank you for your attention.

(applause)

火ted演讲稿篇3

曾经在未涉爱河的时候，总是想像着爱的美丽和爱的甜蜜。终于有一天，我进入到了爱情的角色里

爱是有条件的，就算世上的确有无条件的爱，又能持续多久?不是你自己爱得精疲力竭，就是看到了对方的自私面目而大感失望，或者他/她轻描淡写地说声谢谢、对不起，便毫无眷恋地离开。

人和人是平等的，关心和爱护也应该是相互的，如果只有一方在任劳任怨地付出，另一方心安理得地享受，却没有任何回报，那不一定是真爱。如果当对方从没有将关心与爱护给予你，甚至对你所做的好不感激，你却仍是一味对他/她奉献，那不是奉献是什么?

爱一个能懂爱的人爱付出是会有结果的;而爱一个没有情感，不知道什么是爱的人，就犹如把自己心爱的宝石投入浑浊的河水。我不知道我是幸运的前者，还是不幸的后者。不过，这些对我都已经没有任何意义了。一个人自己把自己爱的火苗浇灭，那是一种什么感觉?那种火苗，一生中又会燃气几次呢?留住了历史的美丽与永恒，却永远换不回那份激情和热情了。

爱是相互的，有所付出，也有所要求。不珍爱自己，别人也不会来尊重你。当他/她习惯了接受你的付出，一切就变成了理所当然，太容易得到的东西自然就不会珍惜。真爱原来是双方的付出，犯贱之后，我们终于领悟。

两个人在一起要面对的东西是很多的，要生活的日子很长，所以更多是能为对方做什么，对方需要自己的时候是否能让他/她感受到你的温暖，成为彼此心灵的港湾，而不是年轻一起玩玩而已!

总之，爱一个人，不在于得到多少，而在于付出多少;爱一个人，不在于付出了多少，而在于还能付出多少;爱一个人，不在于为他/她付出了多少，而在于为他/她坚守了多少

火ted演讲稿篇4

尊敬的各位评委、亲爱的同学们：

大家好!20__年已经过了一大半，我们也从一个满怀壮志的高中生，成为一名大学生，这期间虽然饱尝了山穷水尽疑无路的困顿，可丰富的大学生活又给我们带来了柳暗花明又一村的崭新境地，因为这里是我们攀登目标理想的新起点，这里也是我们积累知识阅历的新家园。

今天，我的演讲题目是“我的大学，我的梦!”。

也许中学时期就已经读到或者听到许许多多关于大学生活的信息，有人说大学生活绚丽多彩的，也有人说大学生活是无聊空洞、浪费青春的。也许，后者更多一些。是的，其实，他们说的都是正确的，因为真实经历，他们才会那么说，这两者是不矛盾的。这是因为在大学里，有的人确实过得很充实、很开心，深深留恋这块他们认为是一辈子都无法重复的净土。也有的人，从一踏进校园就很失望，觉得一切都跟自己想像的不一样。从此浑浑噩噩混日子，最终醒悟的时候才猛然发觉，仿佛一夜之间，大学已经过去，随之逝去的还有自己宝贵的青春。记住，只有后悔大学混了几年的人，而不会有后悔上了大学的人。即使是那些在校时贬得他的母校犹如人间地狱的人，多年以后，回忆起大学时光，也往往会感慨万分，甚至泪流满面。不管你未来大学过得如何，至少你要时刻提醒自己：人生只有一个大学阶段。

在过去的旅途中，无论你是否拥有过欢笑，拥有个阳光，这都已成为永远的记忆，加上一把锁将它封闭起来吧!摆在我们面前的，新的老师，新的同学，新的旅途，新的梦幻，新的生命正在破土而出，面对这一切，我们该怎么办。由于现实的残酷，我们将化身为一个个骑士，抹掉胸口上的创伤，擦掉昔日的荣耀，拿上我们的曾经的利器，整装待发，新学期的目标是我们新的征途的开始!

梦想是我们通往成功的地图，只有付出了行动，迈出我们坚实的步伐，才能让我们到达成功的彼岸。确定我们的目标，就要为了他努力拼搏。志当存高远!我们要立长志不要常立志。

人生是对理想的追求，理想是人生的指示灯，失去了这灯的作用，就会失去生活的勇气。因此，只有坚持远大的人生理想，才不会在生活的海洋中迷失方向。托尔斯泰将人生的理想分成一辈子的理想，一个阶段的理想，一年的理想，一个月的理想，甚至一天、一小时、一分钟的理想。当你听到这里，同学们，你是否想到了自己的理想?

人生的花季是生命的春天，它美丽，却短暂。作为一名大学生就应该在这一时期，努力学习，奋发向上，找到一片属于自己的天空。青年是祖国的希望，民族的未来。每个人主宰着自己的明天。

历史的重任在肩，我们责无旁贷。我们一定会勇敢地挑起肩上的责任，虽然前方会有巨浪滔天，但是也会有长虹贯日。让我们拿出“吹尽狂沙始到金”的毅力，拿出“直挂云帆济沧海”的勇气，去迎接人生中的风风雨雨!“宝剑锋从磨砺出，梅花香自苦寒来”，我坚信一分耕耘，一份收获，学习的根是苦的，学习的果子是甜的。我们奋发努力、勇往直前，一定会迎来收获的那一天。希望几年后的今天，我们能够收获自己辛勤劳作换来的累累硕果。同学们，今天让我们在一起定下大学之约，让我们告别盛夏的流火，应承金秋的丰硕，用青春诠释我们曾经的誓言，用汗水锻造我们明日的辉煌。未来的日子我们将共同走过，我们有着共同的追求。

大学生活是多姿多彩的，但也需要我们去把握和深人体会。有人说：“平凡的大学生有着相同的平凡，而不平凡的大学却有着各自的辉煌。”但，你可以选择平凡，但却不可以选择平庸;可以的话，相信谁都想不平凡。好了，我今天的演讲也到此为止了。

最后，只上一句话：“路漫漫其修远兮，吾将上下而求索。”是的，送给我自己，也与大家共勉!

谢谢大家!

火ted演讲稿篇5

命运由自己决定，生活由自己选择。

在人生的道路上遇到难题时，是进还是退，是坚持还是放弃，是一个永恒的话题。从古至今，在历史的舞台上，演绎了一幕幕悲喜剧......

在十字路口上，一切都很迷茫......

项羽，一个力能扛鼎的力士，一个豪气冲天的霸王，是他手中的剑，结束了秦的暴政，也打破了秦军不可战胜的神话。我们佩服他的勇气，敢以八千江东子弟兵为本。几番征战，浴血沙场。当他站在秦朝皇宫前，宣告秦的灭亡时，我们会称赞他的睿智。

荣誉背后，是异常艰难的抉择：起义成功了，那还好说。若是起义不成功呢?灭九族、五马分尸这些酷刑，就摆在自己眼前。我想：项羽那时的手肯定万分沉重，因为它寄托了太多的希望与徘徊。

项羽也可以选择平淡，过着祖辈们，那种面朝黄土北朝天的生活。

平淡地生，平淡地死，平淡地，在时间的长河中消失。

但他没有，毅然决然地选择了反抗。