Which of the following is a sign of overtraining?

Persistent fatigue is a key sign of overtraining because it indicates that the body is not recovering adequately from the physical stress imposed by exercise. When an individual engages in a rigorous training regimen without allowing sufficient time for recovery, they may experience a state of overtraining. This condition can result in a range of negative symptoms, with persistent fatigue being one of the most prominent.

During overtraining, the body struggles to keep up with the demands placed upon it, leading to chronic exhaustion that doesn't improve with additional rest or recovery time. This ongoing fatigue can also impact mental state, motivation to train, and overall performance, often causing a decline rather than improvement, which further compounds the issue. Recognizing persistent fatigue is essential for athletes and fitness enthusiasts to adjust their training intensity and ensure they allow themselves adequate time to rest and recover, thus preventing further complications related to overtraining.