Why we get sleepy in daytime

https://gunosy.com/articles/RwIn3

24 hours in a day but biological time is 25 hours.
（This is same as mars rotation period）

Usually we adjust the difference one hour with unconsciousness, if we can't, it will be jet lug. Then even we sleep at night, we gets sleepy.

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\ Books of Takumi Yamazaki, English ver.
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\ http://www.amazon.com/Shift-ebook/dp/B007VSDZPG/ref=sr_1_2?ie=UTF8&qid=1370728415&sr=8-2&keywords=shift+takumi+yamazaki
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\ Able to download if you click this site.}

ABOUT

Takumi Yamazaki was born in Mie prefecture, Japan in 1965. He dropped out of Hiroshima University’s Department of Education, but founded 'Taku Co., Ltd' at the age of twenty-two and currently owns three companies. Considered a best-selling author, he has written eighteen books that have sold a grand total of over a million copies, including Hitorikaigi no Kyokasyo, Yaruki no Switch,

Jinsei no Project, and Kikubari no Tsubo (published under Sanctuary Publishing）.

Yaruki no Switch (The Motivation Switch) has sold over 180,000 copies and was ranked 3rd in the self-enlightenment division and 7th in the business book division under the 2009 Oricon Business Book Ranking System. In 2010, it was translated into Chinese and English and published in the United States in 2011 under the title SHIFT.

He is well-known as an author and lecturer both domestically and abroad, including such countries as the US, China, Hong Kong, Taiwan, and Korea.

Takumi’s first seminar DVD "Kikubari no Tsubo Practice Seminar" recorded a Top 1 turnover for five consecutive months at TSUTAYA DVD Rental under the General Education Business Division. He lectures on various topics, including leadership theory, communication techniques, and mental management. He is well-known for creating the saying, “amazing things happen unconciously.” Takumi has been nicknamed a “Dream Producer.”

Besides extraordinary public speaking skills, charisma, and creative business theory, his powerful messages and unprecedented perspective continue to attract both men and women alike. Additionally, he publishes newspapers such as "Make Your Monday Happier: Yamazaki Takumi Communication" and "Taku Addiction." delivering via mobile site know-how and his experiences with his real voice such as "SUGOKOTO.com," "Taku Raji Podcast" and "Kerotaku" from time to time.

Takumi’s goal is not only to make his business endeavors successful, but to also make his own dreams come true and simply enjoy life. He lives by the motto “Life is an Only One Project". Takumi is an essayist, artist, illustrator, director, designer, salesman, and a music producer. His work has been displayed in galleries in New York, the Japanese countryside, and multiple Universities.

≪More Information≫

■PC official site

http://www.taku.gr.jp/

■Mobile official site

http://sugokoto.com

■Smartphone official site

http://sp.sugokoto.com/

■Official Blog

http://www.taku-blog.jp/

■Chinese official blog

http://blog.sina.com.cn/shanqituosi

≪Twitter related≫