Which of the following can cause undue fatigue, increase the risk of injury, and potentially lead to burnout?

Overtraining is identified as a condition that results from excessive training without adequate rest and recovery, leading to an imbalance between training loads and the body’s ability to recover. This excessive strain can cause symptoms such as undue fatigue, heightened risk of injury due to overuse, and mental burnout, making it difficult for an individual to maintain their fitness regimen.

Individuals who are overtrained often exhibit decreased performance, increased irritability, and lack of motivation, which can all further exacerbate feelings of fatigue and distress. The body requires a proper balance of training stimulus and recovery to adapt and improve; when this balance is disrupted due to excessive training, the likelihood of chronic fatigue and injury increases significantly.

While other factors like inadequate rest, poor nutrition, and undertraining can also impact performance and overall health, they do not directly encapsulate the syndrome of overtraining, which specifically highlights the consequences of excess physical demand without sufficient recovery.