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2. Exercise and deep sleep give the brain a 24-hour boost - AOL

   www.aol.com/exercise-deep-sleep-brain-24...

   Improvement to cognitive performance caused by exercise could last for 24 hours, a new study shows. Scientists also linked getting 6 or more hours of sleep to better memory test scores the next day.

3. Is 4 hours of sleep enough? What sleeping too little does to ...

   www.aol.com/news/4-hours-sleep-enough-sleeping...

   Is 4 hours of sleep enough? Experts explain what happens to your body when you sleep four hours, health effects of sleep deprivation and tips to improve sleep.

4. 7 Ways to Improve Your "Sleep Hygiene" & Get a Good ... - AOL

   www.aol.com/7-ways-improve-sleep-hygiene...

   There are ways to get a good night’s rest and avoid daytime sleepiness, from better sleep hygiene to regular exercise and putting screens away earlier. Talk to your healthcare provider ...

5. Benefits of physical activity - Wikipedia

   en.wikipedia.org/wiki/Benefits_of_physical_activity

   Some of the benefits of physical activity on brain health happen right after a session of moderate to vigorous physical activity. Benefits include improved thinking or cognition for children ages 6-13, short-term reduction of anxiety for adults, and enhanced functional capacity in older adults. [8]

6. Polyphasic sleep - Wikipedia

   en.wikipedia.org/wiki/Polyphasic_sleep

   Polyphasic sleep is the practice of sleeping during multiple periods over the course of 24 hours, in contrast to monophasic sleep, which is one period of sleep within 24 hours. Biphasic (or diphasic , bifurcated , or bimodal ) sleep refers to two periods, while polyphasic usually means more than two. [ 1 ]

7. Sleep efficiency - Wikipedia

   en.wikipedia.org/wiki/Sleep_efficiency

   Sleep efficiency (SE) is the ratio between the time a person spends asleep, and the total time dedicated to sleep (i.e. both sleeping and attempting to fall asleep or fall back asleep). It is given as a percentage. [1] SE of 80% or more is considered normal/healthy with most young healthy adults displaying SE above 90%.

8. What Is Deep Sleep? Understanding the 4 Sleep Cycles & Why ...

   www.aol.com/deep-sleep-understanding-4-sleep...

   Most people get around 1.5 to two hours of slow-wave sleep if they get eight hours of shut-eye. This stage is key to waking up refreshed and ready for the day — and it’s what you’re hoping ...

9. Excessive daytime sleepiness - Wikipedia

   en.wikipedia.org/wiki/Excessive_daytime_sleepiness

   EDS can be a symptom of a number of factors and disorders. Specialists in sleep medicine are trained to diagnose them. Some are: Insufficient quality or quantity of night time sleep [5] Obstructive sleep apnea [6] Misalignments of the body's circadian pacemaker with the environment (e.g., jet lag, shift work, or other circadian rhythm sleep ...