A review of short naps and sleep inertia: do naps of 30Â min or less really avoid sleep inertia and slow-wave sleep?

The review highlights the need to have more detailed guidelines about the implementation of short naps according to the time of the day and prior sleep/wake history. Without this context, such a recommendation is potentially misleading. Further research is required to better understand the interactions between these factors, especially at night, and to provide more specific recommendations.