Can't Sleep? Study Finds One Short Activity May Help Save Your Memory

A recent study suggests that brief physical activity or a nap can help protect memory function when full sleep is not possible. Researchers from McGill University found that individuals who engaged in a 20-minute moderate-to-vigorous workout or took a 90-minute nap after being awake for 30 consecutive hours performed significantly better on memory tests than those who did neither.

Sixty-four healthy adults were divided into three groups: one completed a cycling session, another took a nap, and a control group received no intervention. Memory performance tests revealed a 22% difference between those who exercised or napped compared to the control group. Professor Marc Roig, the study's senior author, explained that the results are significant because many people cannot simply catch up on sleep.

He added that the study's findings warrant further investigation in populations frequently exposed to sleep loss. While exercise and napping showed similar memory benefits, the researchers found that napping primarily restored a brain state conducive to learning, while exercise made participants use memory-related neural resources more efficiently.

Exercise proved beneficial without increasing feelings of fatigue, making it a practical option in situations where rest is limited, such as healthcare, transportation, and emergency response industries. However, the study's authors caution that exercise and napping should not replace adequate sleep, as sleep serves vital biological functions.

Future research aims to determine if combining exercise with napping could yield even better results and whether long-term exercise training could improve the brain's resilience to sleep loss.