What are some signs of overtraining in individuals?

Overtraining refers to a condition in which athletes or individuals engage in excessive training without adequate rest, leading to diminished performance and various physical and psychological symptoms. One of the primary signs of overtraining is unexplained or unusual soreness and chronic fatigue. This occurs because the body is unable to recover fully from the strain imposed by intense and prolonged physical activity. As a result, individuals may experience persistent muscle soreness that does not subside, along with fatigue that affects their overall energy levels and daily functioning.

Chronic fatigue and persistent soreness are significant indicators that the body's recovery mechanisms are overwhelmed, which can lead to more severe complications if not addressed. It is essential to recognize these signs early to implement necessary adjustments in training intensity, volume, or recovery protocols, thus preventing further decline in performance and health.

In contrast, the other options suggest positive outcomes associated with training, such as increased energy levels, improved performance, and quick recovery, which do not align with the concept of overtraining. When an individual is overtraining, they are unlikely to experience these beneficial effects, making option B the distinguishing choice that accurately reflects the signs of overtraining.