when i eat my meal with my housemates,i m owiz the 1st one 2 finish the meal in less than 10 minutes.afta that i need 2 wait 4 them 2 finish their meal around 15 minutes. so i would like 2 ask is it normal 4 ppl 2 eat that fast or i myself got serious problems?

nothing really wrong with eating fast, alot of people eat fast.

the problem comes if you're eating fast because you're not chewing enough or if you're not chewing at all.

Same here.. 

Like tat also need to ask meh?
If u think u too fast then slow abit lar..

If u say ur frens sleep 8hours/day and u sleep 3hours/day then your abnormal.

its not just a japanese thing, its becoming the norm for people to sleep less as life begins to move at a faster pace with the introduction of newer faster technologies. people sleep less to have more time in a day to work and do other things. most of the people i know including myself sleep less than 5 hours a day, too many things to do not enough time to do it in, so we sleep less and do more. its unhealthy.

did you know people of today sleep more than 50% less than people a 100 years ago?