Let’s see what science says. In a research carried out in a span of 10 years, it was found that adults who
sleep more than 8 hours every day are at risk of dying earlier.
Also, it is generally believed, sleeping more than this ideal 8-hour duration is a mark of depression or
taking sleeping pills.
When you get up after sleeping for very long, mentally you feel drained – and, in a way, disappointed for
wasting so much of time that you could have spent doing something more productive. You feel tardier.
Also, if you aren’t used to long sleeps, and on one day you decide to sleep long, your body would feel
uncomfortable with it because its functioning isn’t used to it. Its whole routine – at what time it
functions what – would be entirely disrupted. This would make the awake-time difficult.
In short, if your body sleeps anywhere longer than regular, you would feel even more tired.
At the same time, small naps are known to be very effective and helpful. In countless studies it was
found that it helps us with our sleep deficits, boosts our brain functioning, improves memory, as well as
our logical reasoning.
So yeah, this is why long sleep are bad, while small (power) naps are believed to be very good for both
physical and mental health.