Science drink milk little common sense 5
Drinking milk is good for health, but many people drink milk in still exist a number of the error on the idea, this paper introduces some scientific drinking milk little common sense.
The 1 morning fasting drink milk should not be. Because the human body when fasting gastrointestinal peristalsis quickly, nutrition in milk are often too late to be absorbed quickly into the e.. In addition, big milk method is insufficient, because this will reduce in oral and salivary mixed opportunity, is not conducive to digestion and absorption. Drink milk before the best to eat some cookies, cakes, or eat snacks while drinking milk.
2 night milk more favorable. Scientific studies found that, in the human body calcium metabolism will have a special rule: the evening especially midnight when the content of serum calcium, there will be a" trough", forcing the body through regulating mechanism of transport a portion of bone calcium supplement. In this way, calcium in the blood is temporarily maintained, but have reduced skeletal calcium in. Milk of calcium rich, therefore before bedtime drink a cup of milk, can compensate for human body needs calcium at night.
3 milk should not be adding sugar boiling. Milk is rich in amino acids, in the condition of high temperature in the milk of lysine with sugars occurring Maillard reaction, generate a new compounds - fructosyl amino acid. This substance can not only for human digestion and absorption, but affect human health, the best milk fresh drinking, such as cold a little heating can.
4 do not like milk can drink yoghurt. The milk has a" repulsive " most people with lactose intolerance, these people can try drinking yoghurt. In the yogurt lactose content significantly reduced, but almost all retain the milk nutrition, wherein the lactic acid bacteria in the human body can survive and reproduction, conducive to nutrient absorption and utilization and improve immunity. Yogurt not containing antibiotics, easy to digest the absorption to fasting drinking.
5 can not be heated drinking yoghurt. Drink sour milk feeds mainly on its nutrition and live bacteria, such as yogurt heating, the body can only drink nutrition to lose biological activity of lactic acid bacteria, so don't heating after drinking.
How birds sleep
During the day, the birds in the branches through singing, fly freely in the blue sky, in the evening, they and we like to rest, sleep, restores the physical strength, but their sleeping position but each are not identical!
Beautiful mallard ducks and swans, under water in daytime, and the rest of the night when the predator, also cannot leave their most loves water. They have beautiful long neck bending forward, head buried in the wings, and then let themselves floating in the water, while dreaming, and swim, is leisurely.
Crane, stork, heron, long-legged bird always stand on one leg and sleep, tired to change the other foot rest, is a model.
Partridge rest like swarms around in a circle, and then as head outwards inward end. In this way, regardless of the enemy from which direction the hit, they can find and run away.
Thrush, Braun and other sounds melodious birds, sleep usually bent legs, claws bent up firmly grasp branches, so don't worry they will fell down from the tree.
While the" night owl" birds of prey in the daytime, you can always see it open one eye, one eye closed, standing in the thick branches, in fact it is sleeping. The sleeping posture is it right? Very offbeat ah, it is in order to monitor the surrounding environment against enemy attack!
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The fish will drown me
Fish have gills, can breathe water, fishes have a swim bladder, can be in the water freely ups and downs. However, some people say the fish that lives in the water will drown, is this true?
Although it sounds ridiculous, but it is true. Fish is fish swimming" buoy", which can be inflated and deflated to adjust the proportion of fish body. In this way, the fish in the swimming requires only minimal muscle activity, will be in the light of floating stability. However, when the fish sink to a certain depth ( i.e." depth" ), the outside huge pressure will cause it to wither section bladder volume. At this time, it 's buoyancy less than its own gravity, so he can't help to submerged to, also do not float, and was ultimately unable to breathe and drowned. Although, the fish also can swing through fins and tail upwards, but if the sink too deep, do also be of no avail.
On the other hand, living in the deep sea fish, because their bones can bear great pressure, so they can live a free life in deep water. If we live in the deep sea fish fast to get the" depth" of above, because it is the inner pressure of the body not with the outside world smaller pressure equilibrium is reached, it will constantly" expansion" to float to the surface. Sometimes, it even took out," burst".
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A dull boy
Greedy will decrease cerebral blood flow
If an excessive eating or stop a moment to eat, the body volume of blood, including brain blood mobilization to the gastrointestinal tract. While adequate blood supply is the development premise, if often in ischemic state, its development must be affected.
Greedy will cause obesity brain""
Over-eating, especially the intake of nourishing food, food into energy will greatly exceed the consumption quantity of heat, the heat energy into fat accumulation in the body. If the brain too much fat, obesity can cause brain"". Research confirms, human intelligence and cerebral sulci folds much about, cerebral sulcus and more obvious, more folds, the higher the level of intelligence. While obesity brain make groove back tightly abutted together, folds disappeared, the cerebral cortex was smooth, and the neural network development difference, so, intellectual level can be reduced.
Greedy will inhibit brain intelligent regional physiological function
The human brain activity patterns of excitation and inhibition is mutually induced in certain parts of the brain, is excited, its adjacent to the site of some areas in the inhibited state, excited more strengthen, peripheral site inhibition is more deepen, and vice versa. Therefore, if the head of the gastrointestinal tract to digest plant nerve center for gluttonous excess food and long time excited, it is bound to cause adjacent language, thinking, memory, imagination and intelligence of brain regional inhibition. These areas such as often is in the state of suppression, intelligence will be worse.
Greedy for constipation and brain damage
Children's snack mostly with high nutrition fine food, eat easy constipation. Constipation, metabolite accumulation in the digestive tract for a long time, the role of intestinal bacteria produce a large quantity of harmful substances, easily treated by intestinal absorption, into the blood circulation, stimulate the brain, the brain nerve cells of chronic poisoning, affecting the normal development of the brain.
Greedy will induce brain failure
Scientists found in a study, one can induce brain senescence substances -- fibroblast growth factor, due to increased satiety of food after tens of thousands of times, this is a kind of arteriosclerosis substance, so from long-term sense, greedy will cause premature aging of the brain.
科學(xué)飲乳小常識(shí)5則
喝牛奶有益健康,但不少人在喝奶方面還存在一些觀念上的誤區(qū),現(xiàn)介紹一些科學(xué)飲乳的小常識(shí).
1.晨起空腹喝奶不宜.因?yàn)槿梭w空腹時(shí)胃腸蠕動(dòng)快,牛奶中營(yíng)養(yǎng)物質(zhì)往往來不及被吸收就匆匆進(jìn)入大腸.此外,大口喝奶的方法也不足取,因?yàn)檫@樣會(huì)減少在口腔中和唾液混合的機(jī)會(huì),不利于消化吸收.喝牛奶前最好先吃些餅干、糕點(diǎn)等,或邊吃點(diǎn)心邊喝牛奶.
2.晚上喝奶更有利.科學(xué)研究發(fā)現(xiàn),人體中的鈣代謝會(huì)有一個(gè)特殊的規(guī)律：晚間尤其是午夜之際,血漿鈣含量會(huì)出現(xiàn)一個(gè)"低谷",迫使機(jī)體通過調(diào)節(jié)機(jī)制調(diào)運(yùn)一部分骨骼中的鈣來補(bǔ)充.這樣,血液中的鈣雖暫時(shí)得到維持,但骨骼中鈣卻有減少.牛奶中含鈣豐富,因此臨睡前喝杯牛奶,可補(bǔ)償人體夜間對(duì)鈣的需求.
3.牛奶不宜加糖煮沸.牛奶中含有豐富的氨基酸,在高溫條件下牛奶中的賴氨酸與糖發(fā)生梅拉德反應(yīng),生成一種新化合物--果糖基氨基酸.這種物質(zhì)非但不能為人體消化吸收,反而影響人體健康,牛奶最好新鮮飲用,如太冷稍稍加熱即可.
4.不喜牛奶可飲酸奶.對(duì)牛奶有"反感"的人大多患乳糖不耐癥,這些人可嘗試飲用酸奶.酸奶中的乳糖含量大大降低,但幾乎保留了牛奶所有的營(yíng)養(yǎng),其中的乳酸菌在人體內(nèi)能存活繁殖,有利于營(yíng)養(yǎng)物質(zhì)的吸收利用并提高免疫力.酸奶中不含抗菌素,易消化吸收所以能空腹飲用.
5.酸奶不能加熱飲用.喝酸奶主要吃它的營(yíng)養(yǎng)和活菌,如酸奶加熱,人體只能喝到營(yíng)養(yǎng)卻失去了有生物活性的乳酸菌,因此不要加熱后飲用.
鳥怎樣睡覺的
白天,鳥兒們?cè)谥︻^穿梭嗚叫,在藍(lán)天下自由飛翔,到了晚上,它們和我們?nèi)艘粯右惨菹?、睡覺,恢復(fù)體力,不過它們睡覺的姿勢(shì)可是各不相同哦!
美麗的綠頭鴨和天鵝們,白天在水中捕食、戲耍,夜晚休息時(shí)也離不開它們最愛的水面.它們把優(yōu)美的長(zhǎng)脖子彎曲著,將頭埋在翅膀里,然后讓自己漂浮在水面上,一邊做著美夢(mèng),一邊隨波逐流,好不悠閑.
鶴、鸛、鷺等長(zhǎng)腿鳥總是單腳獨(dú)立而睡,累了再換另一只腳,是勞逸結(jié)合的典范.
鷓鴣休息時(shí)喜歡成群圍成一個(gè)大圈,然后一律頭朝外尾向內(nèi).這樣,不管敵人從哪個(gè)方向襲來,它們都能及時(shí)發(fā)現(xiàn)并逃走.
畫眉、百靈等叫聲悅耳的小鳥,睡覺時(shí)通常彎下兩腿,爪子則彎曲起來牢牢地抓住枝條,所以不用擔(dān)心它們會(huì)從樹上摔下來.
而貓頭鷹這種“值夜班”的猛禽,你總能在白天看見它睜一只眼,閉一只眼,站立在濃密的樹枝上,其實(shí)這時(shí)它正在睡覺呢.貓頭鷹的睡覺姿勢(shì)是不是很另類啊,它這樣可是為了時(shí)刻監(jiān)視周圍環(huán)境防備著敵人的襲擊哦!

貪吃孩子變笨
貪吃會(huì)降低大腦的血流量
若一次進(jìn)食過量或一刻不停地進(jìn)食,會(huì)把人體里的大量血液,包括大腦的血液調(diào)集到胃腸道來.而充足的血供應(yīng)是發(fā)育前提,如果經(jīng)常處于缺血狀態(tài),其發(fā)育必然會(huì)受到影響.
貪吃會(huì)造成“肥胖腦”
吃得過飽,尤其是進(jìn)食過量高營(yíng)養(yǎng)食品,食入的熱量就會(huì)大大超過消耗的熱量,使熱能轉(zhuǎn)變成脂肪在體內(nèi)蓄積.若腦組織的脂肪過多,就會(huì)引起“肥胖腦”.研究證實(shí),人的智力與大腦溝回皺褶多少有關(guān),大腦的溝回越明顯,皺褶越多,智力水平越高.而肥胖腦使溝回緊緊靠在一起,皺褶消失,大腦皮層呈平滑樣,而且神經(jīng)網(wǎng)絡(luò)的發(fā)育也差,所以,智力水平就會(huì)降低.
貪吃會(huì)抑制大腦智能區(qū)域的生理功能
人的大腦活動(dòng)方式是興奮和抑制相互誘導(dǎo)的,即大腦某些部位興奮了,其相鄰部位的一些區(qū)域就處于抑制狀態(tài),興奮越加強(qiáng),周圍部位的抑制就越加深,反之亦然.因此,若主管胃腸道消化的植物神經(jīng)中樞因貪吃過量食物而長(zhǎng)時(shí)間興奮,這就必然引起鄰近的語(yǔ)言、思維、記憶、想象等大腦智能區(qū)域的抑制.這些區(qū)域如經(jīng)常處于抑制狀態(tài),智力會(huì)越來越差.
貪吃會(huì)因便秘而傷害大腦
孩子的零食大多以高營(yíng)養(yǎng)的精細(xì)食品為主,吃了容易發(fā)生便秘.便秘時(shí),代謝產(chǎn)物久積于消化道,經(jīng)腸道細(xì)菌作用后產(chǎn)生大量有害物質(zhì),容易經(jīng)腸吸收,進(jìn)入血液循環(huán),刺激大腦,使腦神經(jīng)細(xì)胞慢性中毒,影響腦的正常發(fā)育.
貪吃還會(huì)促使大腦早衰
科學(xué)家在一項(xiàng)研究中發(fā)現(xiàn),一種能促使大腦早衰的物質(zhì)——纖維芽細(xì)胞生長(zhǎng)因子,會(huì)因過飽食物而于飯后增加數(shù)萬倍,這是一種能促使動(dòng)脈硬化的物質(zhì),因而從長(zhǎng)遠(yuǎn)意義上講,貪吃會(huì)使大腦過早衰老.