Do you remember learning the classic laws of thermodynamics, perhaps in seventh grade science class? The basic idea of the second law goes something like this: any system will seek equilibrium where the least amount of energy is expended.
Now I’m sure any of you physicist types will find glaring holes in my paraphrase of such foundational principles: my apologies to such greats as Newton and Kelvin. But the point applies to ALL systems. Left to itself everything becomes more disordered. Without putting energy from the outside into a system it is doomed to collapse.
YOU are that outside energy. Doing something on purpose makes the difference.