»¶ÓÄú·ÃÎÊ52ijÓ¢ºº»¥ÒëÍø£¬½ñÌìС±àΪÄã·ÖÏíµÄÓ¢Óï֪ʶÊÇ£º¡¾ºÈ¿§·ÈµÄ×î¼Ñʱ¼ä£ºÉÏÎç10µã°ë£¡¡¿£¬ÏÂÃæÊÇÏêϸµÄ·ÖÏí£¡
ºÈ¿§·ÈµÄ×î¼Ñʱ¼ä£ºÉÏÎç10µã°ë£¡

For many of us, it is the rocket fuel that gets us going first thing in the morning.¶ÔÎÒÃÇÐí¶àÈËÀ´Ëµ£¬ÔçÆðµÚÒ»¼þʾͺȿ§·ÈÔòÈçͬ»ð¼ýȼÁÏÒ»°ã£¬ÄÜÈÃÎÒÃÇÇåÐÑÆðÀ´¶¯ÆðÀ´¡£
But one expert has argued that to get the maximum effect of caffeine, it's better to hold on a few hours - because coffee is most effective if consumed between 9.30am and 11.30am.µ«ÊÇÓÐר¼ÒÈÏΪ£¬ÒªÏë»ñµÃ¿§·ÈÒòµÄ×î¼ÑЧ¹û»¹µÃÔÙµÈÉÏЩÐíʱ¼ä¡£ÒòΪÔÚÉÏÎç9£º30-11£º30Õâ¸öʱ¼ä¶ÎºÈ¿§·È²ÅÊÇ×îÓÐЧµÄ¡£
Steven Miller, a neuroscientist from the Uniformed Services University of the Health Sciences in Maryland, says it is best to drink coffee when the body¡¯s levels of the hormone cortisol are low because caffeine interacts with the hormone.ÂíÀïÀ¼Öݹú·ÀÒ½¿Æ´óѧµÄÉñ¾Ñ§¼ÒÊ·µÙ·Ò¡¤Ã×ÀÕÈÏΪ£¬×îºÃÔÚÉíÌåÖеĺɶûÃÉÆ¤ÖÊ´¼Ë®Æ½Æ«µÍʱºÈ¿§·È£¬ÒòΪÕâʱ¿§·ÈÒòºÍºÉ¶ûÃÉÏ໥×÷Óá£
He explained that people who drink coffee when their cortisol levels are high ¨C namely, between 8am and 9am ¨C develop a tolerance to caffeine, meaning it becomes less effective.Ëû½âÊ͵À£¬µ±ÈËÃÇÔÚÉÏÎç8-9µãÖÐÆ¤ÖÊ´¼Ë®Æ½½Ï¸ßʱºÈ¿§·È£¬ÉíÌå¶Ô¿§·ÈÒòÓÐÄÍÊÜÐÔ£¬²¢²»ÊǺÜÓÐЧ¡£
Cortisol controls the body clock and causes people to feel wide awake, The Telegraph reports. The body¡¯s levels of the hormone are usually high just after a person wakes up but start to fall about an hour afterwards.¾Ý¡¶Ã¿ÈÕµçѶ±¨¡·±¨µÀ£¬Æ¤ÖÊ´¼¿ØÖÆÈËÌåÉúÎïÖÓ£¬ÈÃÈËÃǸоõºÜÇåÐÑ¡£ÈËÌåÄڵļ¤ËØË®Æ½ÔÚ¸Õ¸Õ˯ÐѺóͨ³£½Ï¸ß£¬µ«´óԼһСʱºó±ã¿ªÊ¼Ï½µ¡£
Mr Miller argues that it is during this drop in cortisol levels that people get the most benefit from the caffeine in coffee ¨C it gives them a boost as it encourages cortisol production when their cortisol levels start to drop and they do not become resistant to its benefits.Ã×ÀÕÏÈÉúÈÏΪ£¬ÕýÊÇÒòΪÕâÖÖÆ¤ÖÊ´¼Ë®Æ½Ï½µ£¬ÈËÃÇ´Ó¿§·ÈÖÐËùº¬µÄ¿§·ÈÒò»ñµÃÁË×î´óÒæ´¦¡ª¡ªÒò¿ÉÒÔÕñ·Ü¾«Éñ£¬ÔÚÆ¤ÖÊ´¼¼¤ËØÏ½µÊ±´Ì¼¤Æ¤ÖÊ´¼²úÉú£¬¶øÇÒÈËÌå¶Ô¿§·ÈÒòµÄÎüÊÕ²»»áÊܵ½Æ¤ÖÊ´¼µÄµÖÖÆ¡£
He explained that cortisol levels also peak at lunchtime and between 5.30pm and 6.30pm, meaning that these would also not be good times to drink coffee.Ëû½âÊ͵À£¬Æ¤ÖÊ´¼Ë®Æ½ÔÚÖÐÎçÒÔ¼°ÏÂÎç5£º30-6£º30Ö®¼ä´ïµ½·åÖµ£¬ÕâÒ²¾ÍÒâζ×ÅÕâÁ½¸öʱ¼ä¶ÎÒ²²»ÊǺȿ§·ÈµÄ×î¼Ñʱ¼ä¡£

Writing on his blog he said: ¡®If we are drinking caffeine at a time when your cortisol concentration in the blood is at its peak, you probably should not be drinking it.ËûÔÚ²©¿ÍÖÐдµÀ£º¡°Èç¹ûµ±ÎÒÃÇµÄÆ¤ÖÊ´¼Å¨¶ÈÔÚѪҺÖдﵽ¸ß·åʱºÈÁË¿§·È£¬ÄÇôÄã¿ÉÄܲ»Ó¦¸ÃÔÚÕâ¸öʱºòºÈ¿§·ÈÁË¡£
¡®This is because cortisol production is strongly related to your level of alertness and cortisol peaks for your 24 hour rhythm between 8 and 9am on average.¡°ÕâÊÇÒòΪƤÖÊ´¼¼¤ËصÄÉú²úÓëÈ˵ľ¯ÐѶȽôÃÜÏà¹Ø£¬ÔÚÒ»Ìì24СʱµÄÉúÎïÖÓÀÔçÉÏ8-9µãƤÖÊ´¼´ïµ½¶¥·å¡£¡±
He added that people who drink a coffee first thing in the morning, when their cortisol levels are naturally high, will soon find themselves needing to make their coffee stronger and stronger to get the desired effect.Ëû²¹³äµÀ£¬ÈËÃÇÔçÆðµÚÒ»¼þʾÍÊǺȿ§·È£¬ËûÃÇµÄÆ¤ÖÊ´¼Ë®Æ½×ÔÈ»¾Í¸ßÁË£¬ºÜ¿ìËûÃǾͻᷢÏÖ×Ô¼ºÐèÒªºÈ¿§·ÈÀ´´ïµ½ËùÐèµÄЧ¹û¡£
However, he did accept that cortisol levels at different times of day vary from person to person meaning that the best time of day to drink a coffee also differs between people.²»¹ý£¬ËûȷʵÔÞͬÿ¸öÈËÔÚÒ»ÌìÖеIJ»Í¬Ê±¼ä¶ÎËù½ÓÊܵį¤ÖÊ´¼Ë®Æ½ÒòÈ˶øÒìÕâ¸ö˵·¨£¬¼´Ã¿ÌìºÈ¿§·ÈµÄ×î¼Ñʱ¼äÒ²ÒòÈ˶øÒì¡£
For example, people who get up very early may find their cortisol levels drop earlier than those of people who get up late.ÀýÈ磬ÆðµÄºÜÔçµÄÈË¿ÉÄܻᷢÏÖËûÃÇµÄÆ¤ÖÊ´¼Ë®Æ½±ÈÄÇЩÆðµÄÍíµÄÈËµÄÆ¤ÖÊ´¼Ë®Æ½Ï½µµÄÔç¡£
He says it helps turn energy into sugar to be utilised by cells in the body and that it also plays a role in controlling the body clock.Ëû˵£¬ÕâÓÐÖúÓÚÀûÓÃÌåÄÚϸ°û°ÑÄÜÁ¿×ª»¯³ÉÌÇ£¬²¢ÇÒ¶Ô¿ØÖÆÈËÌåÉúÎïÖÓÒ²Æð×÷Óá£
- ÆÀÂÛÁÐ±í£¨ÍøÓÑÆÀÂÛ½ö¹©ÍøÓѱí´ï¸öÈË¿´·¨£¬²¢²»±íÃ÷±¾Õ¾Í¬ÒâÆä¹Ûµã»ò֤ʵÆäÃèÊö£©
-
