Okay, I love a good nap, but I'll never understand when people say they have taken a 15 or 20 minute nap. It takes me 15 minutes just to fall asleep! And now, NASA has studied how long our naps should be, and they found the perfect length of a nap is....wait for it....26 minutes. Apparently, when you nap for 26 minutes, you'll be 54% more alert and 34% better at whatever you do next. Here's why. At 26 minutes, you're only going through the first two stages of sleep . . . you're not entering the others, which can make you feel groggy or even feel worse when you wake up. Maybe I enter the other stages of sleep quicker, but whenever I've tried to take a 15 or 20 minute nap, I always wake up still tired and wanting more. For me, a good nap is about 45 minutes to an hour and a half...just like a baby
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