Ä¿ÇÇÀÇ Ä«ÆäÀÎ È¿°ú´Â ù ÇÑ ¸ð±Ý(the first sip) ÈÄ 10ºÐ ¸¸¿¡ ³ªÅ¸³ª±â ½ÃÀÛÇÑ´Ù(kick in). Ä«ÆäÀÎÀÌ ¼Òȱ⠰èÅë(digestive system)À» ÅëÇØ Ç÷·ù·Î Èí¼öµÇ´Â(be absorbed into the blood stream) ¼Óµµ´Â »ý°¢º¸´Ù ºü¸£´Ù.
ÀÏ´Ü Ã¼³»¿¡ Èí¼öµÇ¸é È®¿¬ÇÑ ¿¡³ÊÁö »ó½Â ´À³¦À» ÁØ´Ù(give a tell-tale feeling of energy boost). ¸öÀÌ ÇǷθ¦ ´À³¢°Ô ÇÏ´Â ÈÇÕ¹°Áú ¾Æµ¥³ë½Å°ú »óÈ£ÀÛ¿ëÇÏ´Â °É Â÷´ÜÇØ¼(block our body from interacting with adnosine) ³ªÅ¸³ª´Â È¿°ú´Ù. Ä«ÆäÀÎÀº ÈÇб¸Á¶°¡ ¾Æµ¥³ë½Å°ú Èí»çÇØ ¸ö ¾ÈÀÇ ¾Æµ¥³ë½Å ¼ö¿ëü¿¡ ¿¼è ÀÚ¹°¼è¿¡ ³¢¿ìµí(fit like a key in a lock to adenosine receptor) ÆÄ°íµé¾î ºÀ¼âÇÔÀ¸·Î½á ÇǷΰ¨À» ´À³¢Áö ¾Ê°Ô ÇÑ´Ù(prevent us from feeling tired).
20ºÐÀÌ Áö³ª¸é °¢¼º È¿°ú¸¦ ÃËÁøÇϸé¼(promote wakefulness) Ç÷¾Ð »ó½ÂÀ» À¯¹ßÇÑ´Ù(trigger a hike in blood pressure). Ç÷°ü ¼öÃàÀ» ÀÏÀ¸ÄÑ(cause blood vessels to constrict) ½É¹Úµ¿¼ö¸¦ ³ôÀÌ´Â(increase heart rate) µ¥ µû¸¥ °ÍÀÌ´Ù. ±×·¡¼ ¸ÅÀÏ Ä¿ÇǸ¦ ´Ù¼¸ ÀÜ ÀÌ»ó ¸¶½Ã¸é Àå±âÀûÀ¸·Î(in the long run) °íÇ÷¾ÐÀ» ÃÊ·¡ÇÒ(lead to high blood pressure) ¼öµµ ÀÖ´Ù°í ÇÑ´Ù.
¿µ±¹ ¿µ¾çÇÐȸ¿¡ µû¸£¸é, Ä«ÆäÀÎ È¿°ú´Â ¾à 45ºÐ ÈÄ ÀýÁ¤¿¡ ´ÞÇÑ´Ù. ÀÚ±Ø È¿°ú(stimulating effects)°¡ ÁýÁ߷°ú ±â¾ï·ÂÀ» ÁõÁø½ÃŲ´Ù(enhance concentration and memory). ÇÏÁö¸¸ Áö³ªÄ¡¸é ¾Ç¿µÇâÀ» ÀÏÀ¸ÄÑ(result in detrimental effects) ÃÊÁ¶ÇÔ°ú ºÒ¾È°¨À» ´À³¢°Ô(feel jittery and anxious) ÇÑ´Ù. ¼ºÀÎ ±âÁØ ¾ÈÀüÇÑ Ä«ÆäÀÎ ¼·Ãë·®Àº ÇÏ·ç¿¡ ¾à 400§·, Ä¿ÇÇ 4ÀÜ Á¤µµ´Ù. ÀӽźÎ(pregnant woman)´Â ±× Àý¹Ý, 10´ë û¼Ò³â ±ÇÀå·®(recommended allowance)Àº 100§· ¾ÈÆÆÀÌ´Ù.
60ºÐ°¡·® °æ°úÇÏ¸é ¹Ý°©Áö ¾ÊÀº ºÎÀÛ¿ë(unwanted side effect)ÀÌ ³ªÅ¸³´Ù. ¼Òº¯ »ý¼º°ú ¹è´¢ ¿å±¸¸¦ ºÎÃß±â´Â(prompt increased urine production and the urge to urinate) ÀÌ´¢(ì¦Òã) ÀÛ¿ë(diuretic effect)ÀÌ ½ÉÇØÁø´Ù. ü³» ¼öºÐ Á¶ÀýÀ» µ½´Â Ç×(ù÷)ÀÌ´¢ È£¸£¸ó ºÐºñ¸¦ ¾ïÁ¦ÇÏ´Â(inhibit the secretion of the anti-diuretic hormone) Å¿ÀÌ´Ù. ÇÏÁö¸¸ Å»¼ö »óŰ¡ µÉ±îºÁ(become dehydrated) Áö·¹ ¿°·ÁÇÒ ÇÊ¿ä´Â ¾ø´Ù. ÇÏ·ç¿¡ Ä¿ÇÇ ´Ù¼¸ ÀÜ ÀÌ»ó ¸¶½ÃÁö ¾ÊÀ¸¸é ±×·² °¡´É¼ºÀº ÀÛ´Ù.
¼Òº¯»Ó ¾Æ´Ï¶ó ´ëº¯ ¿å±¸µµ ÀÚ±ØÇÑ´Ù(stimulate the urge for number two as well as number one). °áÀå(Ì¿íó) ¼öÃàÀ» Ȱ¼ºÈÇØ(activate contractions in colon) ¹è ¼Ó ³»¿ë¹°À» Á÷Àå(òÁíó¡¤rectum) ÂÊÀ¸·Î ¹Ð¾î³»±â ¶§¹®ÀÌ´Ù.
90ºÐ ÀÌÈÄ ½ÅÁø´ë»ç ½Ã°£Àº »ç¶÷¸¶´Ù ´Ù¸£Áö¸¸(vary from person to person), Ä«ÆäÀÎÀº 6½Ã°£ Áö³ª¾ß Àý¹Ý°¡·® ÁÙ¾îµç´Ù(fall by around half). Ãëħ ½Ã°£ 8½Ã°£ ÀüºÎÅÍ´Â Ä¿ÇǸ¦ »ï°¡¶ó´Â ÀÌÀ¯´Ù. ¿ÀÈÄ¿£ ¾Æ¿¹ ¸¶½ÃÁö ¸»¶ó´Â ¾ê±â´Ù.
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