I woke up at 5am every day for two years thinking it would make me more disciplined - but what it actually did was teach me that productivity isn't virtue and rest isn't weakness

For two years, my alarm went off at 5 AM. Every single day. I didn't ease into it. I read a few articles about how successful people wake up early, set the alarm, and started. In Saigon, where I live, 5 AM is already warm and the streets are already alive with people exercising in the parks. It felt like joining something. It felt like discipline.

And for a while, it worked. I was writing before anyone else was awake. I had two hours of focus before my daughter was up and before I needed to be on calls with my brothers back in Australia about the websites we run together. I was productive. I was also, without realizing it, slowly deteriorating.

By month eight, I was crashing every afternoon. By month fourteen, I was irritable in a way I couldn't explain. By month twenty, I was getting more done than ever before and enjoying almost none of it. I didn't connect these things to the alarm clock. I connected them to not trying hard enough.

It took me longer than it should have to understand what was actually happening. I wasn't building discipline. I was systematically shorting my sleep by sixty to ninety minutes a night and calling the consequences character development.

What Chronic Sleep Restriction Actually Does

The research on this is not ambiguous. A meta-analysis by Lim and Dinges examining the impact of sleep deprivation on cognitive performance found significant impairments across multiple domains, with the largest effects on sustained attention. Effect sizes ranged up to large magnitude, with lapses in simple attention showing the most severe decline. The deterioration wasn't limited to people pulling all-nighters. Even moderate, chronic restriction, the kind you get from shaving an hour or two off your sleep for weeks or months, produces cumulative deficits that compound over time.

A separate comprehensive review in Neuropsychiatric Disease and Treatment found that sleep deprivation impairs attention, working memory, long-term memory, and decision-making. The prefrontal cortex, responsible for executive function and impulse control, is particularly sensitive to sleep loss. The review noted that consistently restricting sleep over time is more harmful than a single night of total deprivation, because the deficits accumulate without the person being fully aware of how impaired they've become.

That last part is the trap. You don't feel yourself getting worse. You feel yourself getting used to it. You adapt to the diminished state and mistake the adaptation for normalcy. I was writing more words and making worse decisions about what to write. I was showing up earlier and thinking less clearly once I arrived.

The Cortisol Problem Nobody Mentions

Beyond cognition, there's the hormonal impact. Research by Leproult, Copinschi, Buxton, and Van Cauter found that even partial sleep loss delayed the recovery of the HPA axis, the body's central stress-response system, from its early morning activation. After partial sleep deprivation, evening cortisol levels were 37% higher than normal. After total sleep deprivation, they were 45% higher. The researchers concluded that sleep loss may accelerate the development of metabolic and cognitive consequences of excess cortisol.

Cortisol follows a natural daily rhythm. It peaks shortly after waking and drops to its lowest point around midnight. When you chronically cut your sleep short, that rhythm gets disrupted. A review in the journal Sleep Science and Practice found that sleep restriction increases late afternoon and early evening cortisol levels, and that chronically elevated cortisol correlates with cardiovascular disease, obesity, metabolic syndrome, reduced bone mineral density, and impaired cognitive function.

I was waking up at 5 AM and telling myself I was winning the morning. My body was responding by running a low-grade stress response that never fully resolved before the next alarm went off.

The Belief System Behind the Alarm Clock

What kept me going wasn't the results. By the second year, the results were clearly diminishing. What kept me going was a belief system that equated early rising with virtue and rest with weakness. I had internalized a very specific cultural message: that the people who succeed are the ones who sacrifice comfort, that sleep is a luxury the ambitious cannot afford, and that if you're not uncomfortable, you're not growing.

This belief system is everywhere. It's in the social media posts about 4 AM routines. It's in the entrepreneurial culture that treats exhaustion as a credential. It's in the quiet judgment we direct at people who sleep in, as though their schedule says something about their character.

But the research doesn't support any of it. A review in Sleep Science examining the relationship between sleep, stress, and metabolism found that sleep deprivation is associated with hyperactivity of the HPA axis, impaired glucose tolerance, and neuroendocrine dysregulation. The researchers concluded that sleep, stress, and metabolism interact bidirectionally, and that dysfunction in one system cascades into the others. Good sleep isn't a luxury. It's a regulatory mechanism that keeps everything else running.

What the research supports is that sleep is not the enemy of productivity. Sleep is the infrastructure on which productive cognition depends. Cutting sleep to gain hours is like withdrawing from the bank faster than you deposit. You feel rich for a while. Then you're overdrawn and the penalties start compounding.

What Actually Changed

I stopped setting the 5 AM alarm. I started going to bed when I was tired and waking up when my body was done sleeping, which for me turned out to be around 6:30 or 7. I lost ninety minutes of quiet morning time. I gained back the ability to think clearly after 2 PM. I stopped being irritable with my wife and daughter for no reason. I stopped staring at paragraphs I'd written that morning and realizing they needed to be completely rewritten.

The net output didn't decrease. It shifted. I wrote less total volume but the quality improved and the revision time dropped. The work that previously took me from 5 AM to noon now happened between 7 and 11, because my brain was actually functioning when I sat down to use it.

I still think about those two years. Not with regret exactly, but with the kind of clarity that only comes after you stop doing the thing. I wasn't lazy for stopping. I was lazy for not questioning the premise sooner: that there was something inherently virtuous about being awake when my body was telling me to sleep. I had confused suffering with effort. I had confused discomfort with progress. And I had done it for so long that the distinction had disappeared entirely.

Productivity isn't a moral achievement. Rest isn't a character flaw. And the most disciplined thing I ever did wasn't setting an alarm for 5 AM. It was finally turning it off.