Nap or Quick Exercise May Shield Memory After Sleep Loss
After 30 hours without sleep, healthy adults who took a 90‑minute nap or did 20 minutes of cycling remembered about 22% more on a surprise memory test than those who did neither, with similar benefits from both approaches. EEG data suggest naps help by reducing sleep pressure while exercise makes learning more efficient, meaning they use different brain pathways. These interventions are not a substitute for a full night’s sleep and the study’s participants were young and healthy, so findings may not generalize to all populations. If learning is imminent after poor sleep, a nap or quick workout beforehand may help.
