Strange question but still a good one. there are a lot of view points and I think I should tell my point of the present time. To be healthy in Egypt, Don't care of all things going on because you can catch a disease if you think of all those stuff . In response to error, you have two choices. the first choice You can be quiet and that when you have no enough energy and you will usually find no response. the second choice is to shout and raise your voice and that can work, this will work.
Don't take that view point serious as I must be kidding