Is there a way to sleep less but still feel refreshed or is that physically impossible?
LOL. Invent this and you'll become a billionaire!
Well there actually is a way! well not really
If you fell asleep right on 11pm and woke up right on 5am you will could potentially have a better quality sleep than someone who sleeps 7-8 hours. This is Because you will wake up at the end of your sleep cycle (they last 90 minutes)
Check this out: http://sleepyti.me/wake/
Is that site legitimate?
lol yes? The science is pretty simple, you sleep in 90 min cycles, when you wake up in the middle of one you will feel groggy/tireed for the rest of the day. if you wake up at the end/start of one you will feel better supposedly something like that