We know that the feet sweat, but do not even suspect how much. Foot has more than 250,000 sweat glands. On a hot day, they produce more than 400 milliliters of sweat!
Our skin is constantly being updated so that the upper layer remained elastic and smooth. Every day, 500 million of dead skin cells vacate skin for new cells and separate from your body.
Most of the dead cells remain on the washcloth. On one bath wisp contains billions of dead cells, which are devoured by bacteria.
If someone compared the mouth of a person with a chamber pot - it would be a compliment. The fact is that the mouth is much dirtier place than the average pot. At this point it dwells from 500 to 1,000 bacteria, 70-80 types of fungi and viruses, and even some parasites.
The mucus acts as a moisturizing and cleansing. The body's tissues would dry without it. The viscosity of mucus helps it collect garbage - bacteria, germs pollen, dirt particles, mold spores, smoke, and other substances contained in the air we breathe.