Which of the following is a symptom of overtraining?

Chronic fatigue is a hallmark symptom of overtraining. When an individual engages in excessive physical training without adequate recovery, the body's physiological systems can become strained, leading to significant fatigue that doesn't subside with regular rest. This fatigue can affect performance, motivation, and overall mental well-being, making it difficult to maintain training intensity or achieve specific fitness goals.

While other symptoms can indeed arise from overtraining—like changes in body weight or fluctuations in performance—chronic fatigue is one of the most notable and consistent indicators. It reflects a state where the body has not sufficiently recovered from previous workouts and is struggling to adapt, highlighting the importance of rest and recovery in any training program.

A quick note on performance and body weight: Overtraining typically does not lead to an increase in performance, as it often results in declining performance levels instead. Changes in body weight can occur due to various factors, including changes in muscle mass, body fat, hydration status, and dietary habits, rather than being a direct symptom of overtraining.