Entropy (2nd law of thermodynamics) is the decay of a system and chaos. It is a temporal, gravitational, evolutionarily conditioned change from complex to simple.
It means a change for the worse, into less order and complexity. There is a tendency to generalize by reducing the system's branching and internal hierarchy to complete equalization with the lowest value (death)—the greater the order, the lower the entropy and vice versa. When a human is born, their orderliness increases, and with it, his adaptability, usefulness, and complexity. The higher the orderliness, the more useful the complexity is.
The amount of human energy that cannot be converted into work increases psychophysical disorder; it causes illness, pain, losing the will to live, even death.