Everything you thought you knew about sleep is wrong

On average we sleep 1 hour less than our grandparents. I know that I can tell a huge difference when I get at least 7 hours of sleep vs 6 hours. <br><br>Sleeping more seems to improve your memory, concentration, and overall well-being. Most people sleep 6 hours, but need to sleep for 8 or 9. <br><br>Also, the whole 8 hours a night thing isn’t true for everyone. There are some people who are short sleepers, they can sleep for 4 hours a night and they are fine for the rest of their lives. <br><br>Also, there’s something call polyphasic sleep, where you sleep for 4 hours every 12 hours. I tried it, it didn’t work out for me, but it’s an interesting concept. <br><br>Having too much caffeine and artificial lights at night also really affect sleep. Blue light blocking glasses did nothing for me, but I can’t drink caffeine after 3 pm and be able to sleep.