Sleep study or the dreem 2 headband will tell you. Source: about 1 year ago

There was a device called the Dreem headband that used EEG and bone conduction earphones to play special tones at specific points of your sleep cycle, the goal being to extend the REM segments. Unfortunately that function was software limited to the EU market for whatever reason and then they stopped selling it to the public. I almost got one before they did but I couldn't guarantee that I would have that... - Source: Hacker News / over 1 year ago

I use a sleep helmet , one of These which connects via Bluetooth. On my previous OnePlus phones this has never been an issue, I have to disable location to get it to bind quickly, but apart from that it has always "just worked" with the 7Pro, it connects, downloads data and then disconnects so quickly that if I do not immediately start a session, I have to pair it again & start from scratch. Source: over 1 year ago

One thing that might help with the monitoring aspect is the dreem headband at https://dreem.com/ This might give you nightly data on which you can experiment continuously It measures your sleep via reusable eeg electrodes on a device thats connected to an app I got it a couple years ago I think for 600 USD. I think now it may be geared towards clinical trials though, at least in the USA, so you may have to contact... - Source: Hacker News / almost 2 years ago

If you want sleep tracking, you can use Muse S [0]. You can stream EEG readings in real-time using [1]. However it's really, really hard to get _useful_ data about one's sleep. The results computed by Muse are garbage. The only successful product I know is Dreem [2] but they've exited the consumer market. At the moment, I think the easiest way is to get an ECG (yep, for the heart, not the head) and process the... - Source: Hacker News / over 2 years ago

The body has 90 minute sleep cycles and it's best to time it so you wake up at the beginning or end of one. Here's a sleep calculator that'll estimate it https://sleepcalculator.com/. Source: about 1 year ago

Ck out this site it takes anxiety out of I have to get up in x hours. It’s not how long you sleep but whether you get complete sleep cycles in. It helped me so much! https://sleepcalculator.com/. Source: about 1 year ago

Time bedtime for full sleep cycles - (This is the key) Sleep cycles are typically 90 minutes and if someone wakes up between sleep cycles instead of in the middle, they usually feel more rested. To test this, I timed my bedtime (using sleepcalculator.com) so that I'd be ending a sleep cycle around when my alarm goes off. I made a deal with myself that when my alarm goes off, I take a moment to check how I'm... Source: about 1 year ago

I use this sleep calculator.. You just put in when do you want to wake up and it will tell you when to go to sleep or when you go to sleep it will tell you best times to wake up... I dont realy check what the phases are I just tried this and it worked.. I didnt needed to know more . All I know that at beginning and the end you have very light sleep and you are gona wake up more rested then if you woke up in deep... Source: over 1 year ago

I use a sunrise alarm clock in combination with my phone alarm clock. Combine that with actually catching up on lost sleep by going to bed early for about a year, and using sleepcalculator.com to make sure I didn’t wake up in the middle of a REM cycle, I don’t have issues any more, even on days where I have to forgo 8 hours. Source: over 1 year ago