But what if you ignore taking naps? The worst disadvantage is that your fatigue and stress continue through the day. The Mayo Clinic Blog (.org) talked about "reduced fatigue" as among benefits of naps in one of its articles. Naps serve as time-out sessions from stressful punishments your body takes in so that your exposure is cut for a while instead of being subjected to them the whole day.
After napping, you are greatly re-charged and your body and mind recovered to face another round of fatigue and stress. You have more fighting chances of winning against free radical damage and enjoy a bit more of delayed aging.
Stress and fatigue are not to be trivialized. They can lead to deadly ailments if left unchecked. The less your body and mind have them, the better. And enough sleep and afternoon naps are among our immune defense aids. God designed the body to need them so we can better fight off negative and unhealthy chemical reactions in us, as well as negative emotions like depression.
But naps are supposed to be short sleeps. Don't sleep for hours in the afternoon because this would wreck your natural sleep schedule at night. Don't sleep for long hours in the morning as well. And don't take naps in late afternoons. The best napping time is an hour after lunch, about 10 to 15 minutes. I workout a bit after that (mostly pull-ups) and then continue my writing job.
Lastly, naps are not a license for sleeping late at night. Get 7 to 8 hours of sleep at night and 10 to 15 minutes of nap in the early afternoon. Do this regularly and see the good results in 3 to 6 months--no, the first month even.