Leisha What My 3 A.M. Wake Taught Me About Cortisol
I’m winding down by 6 to 7 p.m. The sun sets here around 6:30, and when the dark settles in, my body responds just like the birds. And, it really doesn’t matter what time I go to sleep, I always awake early. My internal clock just opens to wake very early.
I usually get my eight hours, which means a 3 a.m. wake-up. That’s a wee bit too early for me; I like to stretch it to around 4. So when I surface at 3, I’ve learned to say to myself, “Not now. Wait.” More often than not, I drift back down into a slow wake-up, and that’s usually where the dreams happen too. It makes sense, since the last stretch of the night is the richest in dreaming sleep. My dreams are often work. I’m fixing, studying, solving so lot arrives at that time of day that gets me prepared for the day ahead.
I keep two rules. If I get up much before 4, by mid-afternoon I’m dropping, watching the clock and counting the hours until bed. And I don’t go to bed before 7, however tempting that gets on a long day.
I have always been like this and always an early riser. To be honest, the early morning is the best part of the day. It is where I get so much done. It’s when I plan my day, organize my thoughts, write and muse. Things flow at that hour because there are no distractions, only the birdsong and the quiet of nature waking up. I wake alert and fresh, with a new start, and I take full advantage of it. I crave that time. It’s probably the secret to how much I get done.
I’ve become curious about why my rhythm works the way it does, and the answer keeps leading me back to one hormone: cortisol. The pattern so many people describe, tired at 7 in the morning, wired at 11 at night and awake at 3 a.m., comes down to a cortisol rhythm that has lost its shape. My own schedule is nearly the opposite, and I don’t think that’s an accident.
Cortisol is the alarm clock, not the villain
We’ve been taught to think of cortisol as “the stress hormone,” something to block or blame. In truth we can’t live without it. Our adrenal glands make it, and it helps hold up our blood pressure, keeps blood sugar steady between meals and helps us respond to injury and illness.
What matters most is its shape across the day. Cortisol is meant to rise and fall like a wave. It starts climbing quietly in the last hours of sleep, then jumps sharply in the first half hour to hour after waking, which researchers call the cortisol awakening response. From there it slopes gently down all day until it bottoms out around midnight, leaving room for melatonin and the body’s overnight repair. Morning high, night low.
The strongest signal setting that wave is light. In one classic study, an hour of ordinary bright indoor light right after waking lifted the morning cortisol peak by about a third compared with darkness, while the same light in the evening did nothing. Mornings are when the body is listening. Our ancestors got that signal for free, with bright sky in the morning and firelight or darkness at night. Many of us have flipped it, sitting in dim rooms all morning and in front of bright screens all evening.
Where 3 a.m. fits
When those signals get scrambled, people describe the same feeling: heavy and foggy in the morning, dragging by mid-afternoon, then strangely alert at night. Late nights mean short sleep, which means another flat morning, and round it goes.
At 3 a.m., cortisol is already beginning its scheduled pre-dawn climb, and sleep has grown lighter. That doesn’t mean cortisol wakes us. It means we’re closer to the surface, so a sound, a warm room or a passing thought brings us up more easily. What keeps us awake is usually what happens next. Worry switches on the stress response, adrenaline and all, and that’s what keeps us lying there. The wake itself is mostly harmless; the racing mind is the real problem.
For an early sleeper like me, there’s also simple arithmetic. If I’m asleep by 7:30, eight hours runs out around 3:30. Some of my 3 a.m. wakes are just my night finishing close to schedule, which is why a calm “not now” so often lets me drift back for that last stretch.
My 4 a.m. rule, it turns out, is exactly what sleep researchers recommend: a fixed wake time that anchors the whole day. And the afternoon slump when I break it makes sense. Get up an hour early and you’ve shortened the night and started the clock on sleep pressure sooner, so it peaks well before bedtime.
What holds up, and what doesn’t
There’s a lot of cortisol talk out there, and some of it stretches the science. The daily wave is textbook physiology, and so is the effect of morning light. It’s also broadly true that long-term stress can affect sleep, appetite, belly fat, mood and menstrual cycles, though how much varies a great deal from person to person.
Other claims I’d hold more loosely. The idea that a 3 a.m. wake is usually a blood sugar crash is overstated. Low blood sugar can wake a healthy person, but in the lab researchers had to push volunteers there with insulin. For most of us, lighter sleep, a full bladder or stress are far likelier culprits. Diabetes is another matter and needs consideration.
Then there’s adrenal burnout, and it is absolutely real. Anyone who has lived through it knows it. After years of stress, short sleep and running on empty, the cortisol rhythm loses its strength. Instead of a strong morning peak and a gentle evening fall, the wave flattens out. You wake exhausted, crash in the afternoon, crave salt, feel lightheaded when you stand, and can’t bounce back the way you used to. Conventional medicine doesn’t officially recognize it, and a single blood test taken at one moment of the day often comes back normal. That doesn’t make it any less real for the people living it.
Resetting the rhythm
The good news is that the levers that matter most are simple and free. Mornings are for switching the wave on. Getting outside around sunrise, even for ten or twenty minutes, makes a real difference, since daylight is far brighter than any lamp, even on a cloudy day. A steady wake time, weekends included, does a lot of quiet work. So does a real breakfast with some protein, rather than coffee alone.
Through the day, it helps to keep things steady: moving the body, ideally earlier rather than later, eating regular meals so you don’t end up shaky and wired, and keeping caffeine to the morning. In the evening the job is to let the wave come down. That means dimming the lights after sunset, putting screens away for the last hour, and jotting down tomorrow’s worries before bed so the 3 a.m. brain has less to chew on.
At 3 a.m. itself, the clock and the phone are best left alone. I breathe slowly, with a long exhale, and tell myself “not now.”
Herbs, and what’s in my coffee
Once the basics are in place, herbs can do a great deal. Adaptogens have been used for centuries to support the adrenals and help the body meet stress, and several now have good research behind them for stress and sleep.
Ashwagandha has the strongest evidence of the adaptogens. Pooled trials show lower perceived stress and morning cortisol, and modest gains in sleep after eight weeks or more. Rhodiola has a decent track record for stress-related fatigue and low mood. It’s best taken in the morning and needs care alongside antidepressants. Holy basil, or tulsi, show promise for stress, mood and sleep, and it makes a lovely gentle tea. Lemon balm and chamomile are softer still. An evening cup of either is a pleasant way to tell the body the day is ending.
My own morning coffee doubles as an herb ritual, with dandelion root, reishi and a few others stirred in. Dandelion root is a traditional bitter long used for digestion and the liver, and its roasted flavor sits beautifully with coffee. Reishi is a mushroom prized in Chinese medicine for calm and longevity. Reishi may thin the blood slightly and lower blood pressure or blood sugar a bit so that needs to be considered for each person. I love what the ritual does: it makes the start of my day deliberate.
Licorice root is one of the classic adrenal herbs. It helps cortisol last longer in the body by slowing its breakdown, which is why it has long been used for that drained, flat feeling. And, that same action can push blood pressure up and potassium down, so licorice isn’t for anyone with high blood pressure. I’d also steer clear of “adrenal glandular” supplements; some have been found to contain real steroid hormones, which can suppress your own cortisol production.
Beyond herbs, some of the best supports are the oldest ones. Magnesium-rich foods like greens, pumpkin seeds, beans and nuts. Time outdoors, which bundles light, movement and calm together. And ten minutes of slow breathing or meditation. Try it. It really works. Magnesium is part of my evening too, from the outside in. Every night I use magnesium chloride on my skin with a little frankincense and a touch of peppermint oil. It has become one of my favorite rituals, and one of the ways my body knows the day is done.
The takeaway
What I am suggesting is very simple: light in the morning, dark at night, regular meals, a steady wake time. Our bodies evolved inside that rhythm, and they respond quickly when we give some of it back. We are nature and we are meant to retire in darkness and wake in light.
So, when I wake at 3 a.m I tell myself “not now.” As my dad always said “early to bed, early to rise.” Perhaps it is an old-fashioned rhythm and a memory of my dad and my body seems to know it well. The herbs help at the edges, but the rhythm does most of the work.
