At which level of stress does optimal performance occur?

Optimal performance is generally achieved at a medium level of arousal. This concept is often described by the Yerkes-Dodson law, which posits that there is an inverted-U relationship between arousal and performance. According to this principle, as arousal increases from low to moderate levels, performance tends to improve due to heightened focus and motivation. However, once arousal reaches too high a level, performance begins to decline due to anxiety or stress that can hinder concentration and efficiency.

A medium level of arousal strikes the right balance: it provides enough stimulation to enhance performance without tipping over into overwhelming stress that can negatively affect an individual's ability to execute tasks effectively. This mid-point allows for optimal engagement with the task at hand, promoting both cognitive and physical performance.