Death is really a fallacy of thought. The physical aspect of you has been dying cell by cell from the moment of your conception. Each type of cell has a different death cycle, its own timetable. For example, the lifespan of the cells lining of the stomach is only 2 days; for the colon, 3-4 days. Skin cells regenerate every 2-4 weeks, red blood cells, every 4 months and some of the cells that make up bone can last up to 25–30 years!