Confinement Part 2

I guess there's a lot of things about confinement I dont know until now. I always thought that it will only last for a month, which is like 30 days. But, BUT, it will only be over after 40 days. T_T

Most food can be enjoyed after this 40 days (That's what I'm concerned about!!). But, BUT (again!), there are food that cannot be taken for 4 months~!! Food like banana, papaya, yam & cucumber. I wonder in those Western countries, where they dont practice confinement, wont they have aches all over?