Our kidneys are amazing organs. They are the bean-shaped organs on either side of the spine. They work silently, filter the blood, remove waste, keep the body’s fluid balance, and keep normal levels of electrolytes without you noticing anything.
All of the blood passes through them several times a day. When the blood goes into them, waste is removed, minerals and water levels are adjusted, and salts balance is achieved.
Each human kidney has around one million tiny filters called nephrons. Surprisingly, we can only have 10% of our kidneys working, and we wouldn't feel any difference at all, no symptoms and no problems.