The animal kingdom has been divided into two major groups: Invertebrates and Vertebrates. Invertebrates are those that do not possess a vertebral column or backbone while Vertebrates are those where vertebral column or backbone is present.
Poor lung growth is a direct effect of smoking among young smokers. Weaker and smaller lungs are the result, along with dead cilia, cilia are used to clean the lungs and are often killed. Lung cells are frequently over used for repair and maintenance as oppose to proper cell growth. These effects can not naturally be corrected.
Things in motion tend to stay in motion, things at rest tend to stay at rest. Your brain never slowed down to the point where it would get tired to sleep. If you were laying in bed trying to sleep all night but couldn't that could be a medical disorder but if you were doing things you're fine
Maybe if the othe kidney's dead and weak we can use out other kidney to live
