Originally Posted by Joe826
Do you have any tips for getting a better grasp on your REM cycle times? I was a little baffled today, because I took my nap, and woke up 70 minutes later feeling refreshed and alert.
Instead of getting up, I decided to sleep the extra 20 minutes, and when I woke up I think I was in the middle of my REM sleep because I had that ultra groggy/tired feeling.
Is it possible that my cycle is really only 70 minutes long? How can I get a better handle on this?
If you wake up that close to the estimated wake-up time, you may as well just get up. Especially if you feel refreshed and alert.
Calculating the cycle length really doesn't have to be complicated; if you keep waking up after 70 minutes feeling refreshed, that 70 mins is probably it. Everyone will be different in that regard (too many health + age + fitness variables for it to be otherwise) - as a reference point, mine is about 80 minutes.