This was an excellent explanation about this annoying issue we all have suffered sometimes.
When little I wasn't aware of the importance of cleaning the tongue, and it wasn't until my aunt who is a dentist explained to me, that I started to clean my tongue intensively everyday.
Taking care of our mouth is a serious subject, because its one of the worst places to have an infection.
Thanks for the comment @dedicatedguy
Yeah, it is one of the major health issues and can be worse if not taken care off. I have seen some of the bacterial infections of tongue, believe me they are horrible.