Caffeine buzz that lasts all day

by ZOE BOLTON, Daily Mail online

Last updated at 17:15 12 May 2004


Drinking a large cup of coffee in the morning may not be the best way to start the day, a new 熟考する／考慮する in the US has shown.

Scientists have 設立する that small, たびたび（訪れる） doses of caffeine are much better at keeping us awake because they build up and 中和する／阻止する the 団体／死体's 願望（する） for sleep.

The 熟考する／考慮する 設立する that drinking a large cup of coffee 供給するs an 即座の caffeine buzz, but that it wears off just as the 団体／死体 begins to feel the need for sleep.

Caffeine misuse

"Most of the 全住民 is using caffeine the wrong way by drinking a few 襲う，襲って強奪するs of coffee or tea in the morning," James Wyatt, 研究室／実験室 director of the Sleep Disorder 中心 at 急ぐ University 医療の 中心 in Chicago, said.

"This means that caffeine levels in the brain will carry on 落ちるing as the day goes on.

"Unfortunately, the physiological 過程 that 増加するs the need to sleep does not come into play until the latter half of the day."

Caffeine is thought to 減らす the need for sleep by 封鎖するing the receptor, which sends a 化学製品 message to the brain encouraging the 団体／死体's 運動 for sleep.

The 研究 was published in the May 問題／発行する of SLEEP, the 定期刊行物 of the Associated Professional Sleep Societies.

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