Extreme exhaustion does not always result in sleepiness but can manifest as the opposite (a sensation of restlessness or excitement); knowing how to identify these atypical signs makes it possible to realize that one is neglecting their sleep.

noli's read

The idea that excessive fatigue sometimes manifests as excitement or an inability to relax is based on well-documented neurophysiological foundations. Observational studies using quantitative electroencephalography (qEEG) show that cumulative sleep deprivation or prolonged stress triggers a state of "hyperarousal." This mechanism keeps the nervous system on alert, which results in rapid brain activity and a higher heart rate. Furthermore, literature reviews and meta-analyses on sleep regulation (such as the work of Riemann et al.) confirm that exhaustion can be perceived by the body as stress, temporarily stimulating the production of energizing hormones. Although the creator greatly simplifies the concept without detailing its biological underpinnings, her phenomenological description is quite accurate. The opinion and consensus of sleep specialists validate that identifying this restlessness as a signal of deep exhaustion is essential for readjusting one's rest routine.

the sources

No named source held this one up — that absence is part of the verdict.