In a biological sense, humans do not transform into skeletons. However, the human body does consist of a skeletal structure that provides support and protection for the body's organs. With time and under certain conditions, the body's flesh and other soft tissues can decompose, leaving only the bones, which is sometimes referred to as a skeleton.
The process of becoming a skeleton is part of natural decomposition, which occurs after death. This process is influenced by various factors such as environmental conditions, temperature, and the presence of microorganisms. Over time, the soft tissues break down, and the remaining bones may eventually disintegrate as well.
In a metaphorical or humorous context, it might be said that someone "turned into a skeleton" if they lost a lot of weight rapidly, but this is not a literal transformation. It is essential to treat the concept of turning into a skeleton as a playful or fictional scenario and not a real possibility.