A Night Owl Developer Fixes His Sleep Schedule

When 3 AM Was Normal

I'd been nocturnal since college. Focus would kick in around 11 PM, and I believed 2-3 AM was my golden hour. After getting a job, I kept rationalizing it with "I'm just a night owl" -- coding until the early hours and barely dragging myself out of bed in the morning. Four years of this.

My average bedtime was 2:43 AM. (I checked -- my iPhone sleep data had it recorded precisely.) Wake-up at 8:20. Total sleep: 5 hours and 37 minutes.

The Wake-Up Call Was a Health Checkup

My company health screening came back with "suspected sleep apnea." A polysomnography test showed 13.2 apnea events per hour. Mild sleep apnea. That explained why I felt tired no matter how much I slept.

The doctor said "start by changing your lifestyle habits" and emphasized sleep schedule regularity. "It's not about how many hours you sleep -- it's about sleeping and waking at the same time every day." Sleeping at 11 PM and waking at 6 AM is better than sleeping at 3 AM and waking at 8 AM, even if the latter gives you more total hours.

But honestly, who feels sleepy at 11 PM? That's exactly why I stayed up until 3 AM in the first place.

Attempt 1: Melatonin

Bought 3mg melatonin from the pharmacy. Saw reviews saying "take it at 9 PM and you'll feel drowsy by 11." Results were... I did get sleepy. But then I'd pick up my phone and the drowsiness vanished. I spent two weeks taking melatonin and watching YouTube in bed like an idiot. Naturally, it didn't work.

Only after I started leaving my phone outside the bedroom did melatonin actually do its thing. It wasn't a medication problem -- it was a behavior problem.

Attempt 2: Sleep Hygiene

When I first heard the term "sleep hygiene," I thought it was some kind of joke. (Hygiene for sleeping?) But following the guidelines one by one, they actually worked.

Keep the bedroom dark. Hung up 32,000-won blackout curtains. Only use the bedroom for sleep. Broke the habit of using my laptop in bed. No screens for the last hour before sleep. This was the hardest part. What did I do instead? Read books. Paper books. At first I couldn't make it 10 minutes before falling asleep. (Isn't that actually a good thing?)

No caffeine after 1 PM. This one is pretty brutal for developers. I thought I couldn't code without my 3 PM coffee, but I adapted after two weeks.

First Month Results

Bedtime went from 2:43 AM to 12:17 AM. Wake-up at 7 AM. Sleep duration increased to 6 hours and 43 minutes -- over an hour more. But what mattered more was sleep quality. I woke up less during the night, and there were mornings where I'd open my eyes without an alarm.

Morning focus improved noticeably. Before, I'd spend the morning hours in a fog just reading code. Now I can write core logic in the morning.

But It's Not Perfect

Friday nights are the problem. "I don't have to wake up tomorrow" becomes an excuse to stay up until 2 AM again. When the weekend breaks the rhythm, Monday is hell all over again. They call this "social jet lag." You're adjusting to a time zone shift without ever leaving the country.

Sleep quality also drops hard after drinking. Three beers and even 7 hours of sleep won't leave me feeling rested.

Three Months In

My average weekday bedtime has moved to 11:48 PM. From 3 AM to 11:48 PM -- that's almost 4 hours earlier. Haven't had the sleep apnea re-tested yet, but my roommate says my snoring has gotten a lot quieter.

I wasn't a night owl. I just had a deeply ingrained habit of staying up late. But it took four years to admit that.