​The 90-minute rule: How to get more out of your sleep

Video explains it pretty well. Not all people have the same sleep cycle though. Mine for example is longer (100 minutes).
You can test this with a sleep tracker. For android it’s ‘Sleep as Android’. You can easily see how long a sleep cycle takes for you.
I know there is a sleep tracker for IOS too, it’s called ‘Sleepcycle’. I am not entirely sure if this app shows you how long your sleep cycle is.

If your sleep cycle is 90-minutes for example you will feel the best waking up after:
1:30
3:00
4:30
6:00
7:30
9:00

‘You should sleep 8-hours every night’ right? Well for most people this statement is actually wrong as you can see.
If you set your alarm exactly 8 hours after you fall asleep, you will wake up feeling tired, whereas if you sleep 6 hours you won’t.
That’s the reason I always felt better after 6 hours of sleep and I always used to wake up a sleepy if I woke up after 8 hours of sleep.

If yours is the same as my sleepcycle (100 minutes), you would feel best waking up after:
1:40
3:20
5:00
6:40
8:20
10:00

Also, the Sleepcycle app has one of the best alarm sounds ever. I always wake up sooo relaxed to that one.
As the Sleepcycle app costs money, I downloaded the IOS applicaton and then extracted the .mp3 files. 

Listen to it: soundcloud[DOT]com/sleepcyclesounds3453453/sleepcycle-best-alarm-sound

Download link: www13[DOT]zippyshare[DOT]com/v/74970484/file.html