In asia, especially in rural areas, it is common to wake up early, between 5:30 and 6:00 and do a lot of things, including playing football, before reaching school at 9 am. And, you see, they are perfectly healthy and smart.

Of course, almost everyone is going to bed about 9 or 10 pm.

Failure to take into account cultural and social differences plague so-called studies all the time.

Rice as the cause of health problems is another example. Almost 2/3 of humanity consume rice on a daily basis, sometimes few times per day.