Which of the following is a sign of overtraining?

Persistent fatigue and decreased performance are clear indicators of overtraining. When an athlete or individual engages in excessive training without adequate recovery, the body does not have enough time to repair and rebuild. This can lead to burnout, both physically and mentally, resulting in a noticeable drop in performance levels. Athletes may also experience feelings of tiredness that do not go away with rest, highlighting the body's inability to recover properly from the stress of intense training sessions.

In contrast, increased energy and motivation, improved athletic performance, and enhanced recovery times are typically associated with proper training and recovery practices. These characteristics show that the body is responding well to training stimuli and is adapting positively. Therefore, the presence of persistent fatigue and decreased performance serves as an essential warning sign for trainers and athletes to reassess training loads and recovery strategies to maintain optimal physical health and performance levels.