Buzz
When we stay up all night to prepare for an exam or finish a presentation, we convince ourselves that we can make up for the lost rest later—but is it really possible to recover from the sleep we've missed?
The amount of sleep each person needs can vary, but the National Sleep Foundation recommends 7 to 9 hours per night. However, one-third of Americans fall short of even the lower end of that range, and those who average less than 7 hours a night are considered sleep-deprived. Unfortunately, this sleep debt adds up over time... and it’s not so easy to erase.
If you've lost more than five hours of sleep in a week, or if it’s been several days since your sleepless night, it’s time to accept that recovering that sleep is scientifically improbable. Dr. Raghu Reddy, a pulmonologist and sleep medicine expert at the University of Arkansas for Medical Sciences, states the body can recover up to five hours of lost sleep; beyond that, the body struggles to adapt to the sleep deficit, sometimes bypassing less beneficial stages to go straight to REM sleep. Martha Jefferson Hospital Sleep Medicine Center's medical director, Dr. Christopher Winter, also supports short-term recovery sleep, saying, “recovery sleep in the short term does work,” though he doesn't specify how long this recovery period lasts.
This is not to say that these findings should be used as an excuse to neglect sleep. A study published by the American Physiological Society showed that even after a period of recovery sleep, sleep-deprived individuals did not perform better on attention tests. The test replicated a typical week: six nights of six hours of sleep, followed by three nights of ten hours of sleep, yet this pattern did not offset the effects of sleep deprivation. A 2003 Walter Reed Institute of Research study further supported this inability to recover brain performance with extra sleep, with researchers noting that “the brain adapts to chronic sleep restriction” and continues to function “at a reduced level” for several days—or perhaps longer—after the sleep is recovered.
Recovering from sleep deprivation takes more than just a few days; sleep debt actually builds up over time, and shifting your sleep patterns can disrupt your recovery. A UT Southwestern Medical Center sleep medicine specialist warns against irregular sleep schedules, which can disrupt the circadian rhythm. Instead, aiming to fall asleep eight hours before waking up is ideal for better recovery sleep. Lawrence Epstein, medical director of Sleep HealthCenters, recommends establishing consistent sleep patterns for months to truly erase sleep debt, while Dr. Reddy advises maintaining “good sleep hygiene,” including relaxing bedtime routines, avoiding stimulating activities or beverages like coffee and alcohol, and sticking to consistent sleep and wake times to keep the circadian rhythm in check.
Sleep is often sacrificed in favor of productivity or social activities, but neglecting sleep can lead to serious issues such as memory problems, obesity, and even premature death. On a brighter note, studies suggest that you can bank sleep ahead of time to help offset future sleep deprivation, as long as you plan your sleep schedule carefully.
