Stock characters are normally one-dimensional flat characters, but sometimes stock personalities are deeply conflicted, rounded characters (e.g. the Hamlet type). Protagonist - The protagonist is the central person in a story, and is often referred to as the story's main character.
The human body appears in designed to live up to 190 years. All the vital organs and tissue regenerate over time. Pancreas regeneration takes 24 hours, the Stomach a week, blood is replaced regularly, and the brain creates new connection.
Human according to the bible have been set to live 120 years at best. And sure the body breaks down. But for the most part we don't live as long as we should because we don't take care of our body.