What is a power nap?

“A power nap is defined as a short nap during the day of about 20-30 minutes duration,” says William Deardorff, Medical Advisor for Spine-health.com. “This results in a winding down of activity in the brain’s prefrontal cortex. The short duration of a power nap prevents the person’s brain from entering slow-wave (deeper) sleep. Waking up after being in this deeper state of sleep can result in a sleep inertia causing you to feel heavy, sluggish and groggy.”

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