1 According to a survey of five cities, people in Tokyo on week days sleep just under 6 hours on average, according to a survey by Japanese food seasoning maker Ajinomoto Co.

2 Everyone in all the cities gets up around the same time in the mornings, between 6:30 and 7:00," said the Ajinomoto spokeswoman.

3 This article also analyzed the production situation of threonine and tryptophan at home and abroad, and the main producers and capacity of Ajinomoto Japan of threonine and tryptophan were listed.

4 "I think people in Tokyo may just be too busy, " said an Ajinomoto spokeswoman.

5 "in shanghai, people simply seem to go to sleep earlier. everyone in all the cities gets up around the same time in the mornings, between 6:30 and 7:00, " said the ajinomoto spokeswoman.

6 The end product is then examined to make sure that it is free of bones and then "glued" together using a food-grade enzyme produced by Ajinomoto.