The Yerkes-Dodson law describes this empirical relationship between arousal and performance. Being under-stimulated or over-stimulated both lead to sub-optimal performance. Being in a "flow state" means being in the sweet spot of feeling alert, cool, and in control

The Yerkes-Dodson law describes this empirical relationship between arousal and performance. Being under-stimulated or over-stimulated both lead to sub-optimal performance. Being in a "flow state" means being in the sweet spot of feeling alert, cool, and in control