20-Minute Workout or 90-Minute Nap Can Help Offset a Sleepless Night
A new study found that a short 20-minute workout or a 90-minute nap can help the brain recover after a night without sleep. Researchers say both approaches restore cognitive function that is lost during sleep deprivation. The findings were published in late August 2026.
A 20-minute workout or a 90-minute nap can help the brain recover after a sleepless night, according to a study published in late August 2026.
Researchers tested both approaches on adults who had gone without sleep and measured their cognitive performance afterward. Both the short exercise session and the longer nap restored brain function to levels closer to those seen after a full night of rest.
The study adds to a growing body of research on sleep recovery. Sleep deprivation affects memory, attention, reaction time, and decision-making. Finding practical ways to offset those effects has become a priority for researchers as more people report chronic sleep problems.
Exercise has long been known to improve mood and energy, but this study provides more specific evidence that even a brief workout can counteract some of the cognitive damage from missed sleep. The 20-minute threshold is notable because it is achievable for most people, even on busy days.
The 90-minute nap finding aligns with research on sleep cycles. A full sleep cycle takes roughly 90 minutes, allowing the brain to move through the stages of sleep that are most restorative for memory and cognitive function.
Sleep experts recommend that adults aim for seven to nine hours of sleep per night. For those who fall short, the study suggests that a short workout or a strategic nap can serve as a practical recovery tool. Neither replaces consistent, quality sleep, but both offer measurable benefits when sleep is lost.
