Night Owl vs Early Bird: Can You Change Your Chronotype?
By WellnessVigor · Updated October 14, 2026 · 7 min read
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Some people bounce out of bed at 6 am. Others feel foggy until noon and do their best thinking at 11 pm. That difference is your chronotype, your body clock’s natural timing.
Chronotype is partly genetic, but it isn’t fixed. This guide explains what shapes it, why being a night owl in an early-bird world can affect your health, and how research participants shifted their clocks by about two hours.
Quick answer
You can’t completely change your chronotype, but you can shift it. In a randomized trial, night owls who woke 2–3 hours earlier, got morning light, ate at fixed times and avoided late caffeine shifted their sleep and body clock about 2 hours earlier in three weeks, without losing sleep, and reported less depression and stress. Consistency is key: the shift fades if you return to late nights.
- Genes: variations in clock genes make some people naturally earlier or later.
- Age: teenagers and young adults tend to be later; people usually become earlier with age.
- Light: little daylight and lots of evening light push the clock later. In a camping study, a week of only natural light shifted people’s clocks earlier, and night owls shifted the most.
So part of being a night owl is biology, and part is how modern indoor life treats your body clock.
Is being a night owl bad for your health?
Being a late type isn’t a disease, but the mismatch with work and school schedules seems to matter. In a UK Biobank study of 433,268 adults, definite evening types had higher rates of diabetes, psychological disorders and other conditions than definite morning types, and a 10% higher risk of death over 6.5 years. The authors suggested much of this may come from living out of sync with daily schedules, along with lifestyle factors. The mismatch also creates social jetlag.
How night owls shifted their clocks by 2 hours
In a 2019 randomized trial, night owls (typical bedtime around 2:30 am) followed simple rules for three weeks:
- Wake 2–3 hours earlier than usual and go to bed 2–3 hours earlier.
- Get as much outdoor light as possible in the morning.
- Eat breakfast soon after waking, lunch at the same time each day and no dinner after 7 pm.
- No caffeine after 3 pm, and exercise in the morning when possible.
- Keep the same sleep and wake times on work days and free days.
Their sleep timing and body clock markers moved about 2 hours earlier, total sleep stayed the same, and they reported less depression and stress, with better morning reaction time and grip strength.
Want a structured way to move your sleep earlier? The 14-Day Sleep Reset guide gives you a day-by-day plan.
Low-dose 3 mg melatonin gummies
A gentler dose for occasional sleepless nights, jet lag or getting back on schedule after the weekend.
Good to know: Avoid in pregnancy and check with your doctor if you take blood thinners, diabetes or epilepsy medicines.
A simple plan to become more of a morning person
- Move your wake time 15–30 minutes earlier every few days until you reach your goal.
- Go outside within an hour of waking, even when it’s cloudy.
- Eat breakfast at a regular time.
- Finish dinner by about 7–8 pm.
- Cut caffeine after early afternoon.
- Dim lights and screens for the last 1–2 hours before bed.
- Keep the same schedule on weekends, within about an hour.
The 7-day sleep schedule reset walks through these steps in detail.
When to accept your chronotype
Some people remain later types even with good habits. If your work allows it, a consistent later schedule with enough sleep is healthier than forcing an early bedtime you can’t keep. Very late sleep that makes school or work impossible may be delayed sleep-wake phase disorder, which a sleep specialist can treat.
Products that help night owls shift earlier
These tools make morning light and early wake-ups easier. We have not personally tested these products. Links go to Amazon search results so you can compare current options and prices.
BEST FOR MORNING LIGHT INDOORS
Light Therapy Lamp
If you can’t get outside after waking, a bright light lamp at breakfast helps move a late body clock earlier.
Pros
- Bright light on dark mornings
- Easy daily habit
- Compact options
Cons
- Use in the morning only
- Check with a doctor if you have eye conditions or bipolar disorder
BEST FOR EARLIER WAKE-UPS
Sunrise Alarm Clock
Waking with gradually brightening light can make early mornings feel less abrupt, which helps when you’re moving your wake time earlier.
Pros
- Gentle wake-up
- Sunset mode for bedtime
- No harsh alarm
Cons
- Weaker than daylight
- Quality varies
BEST FOR SCREEN-FREE EVENINGS
Amber Blue Light Glasses
Amber-tinted glasses filter some short-wavelength light in the evening. They are not a substitute for dimming screens, but some people find them a useful reminder to wind down.
Pros
- Inexpensive
- Easy to wear while reading or watching TV
- Encourages an evening routine
Cons
- Evidence for benefits is mixed
- Clear lenses filter very little
BEST FOR EARLY BEDTIMES
Contoured Sleep Mask
Moving your bedtime earlier in summer often means going to bed before it’s fully dark. A mask helps.
Pros
- Cheap
- Blocks light anywhere
- Portable
Cons
- Not everyone likes wearing one
- Fit varies
Keep reading
Frequently asked questions
Can a night owl become a morning person?
Most night owls can shift their schedule earlier by a couple of hours with consistent wake times, morning light and earlier meals. A complete change is less likely, and the shift needs to be maintained.
How long does it take to change your chronotype?
In research, about three weeks of consistent habits shifted night owls by roughly 2 hours. Many people notice changes within 1–2 weeks.
Is it unhealthy to be a night owl?
Being a late type is not unhealthy in itself, but evening types tend to have more health problems, possibly because of the mismatch with early schedules, shorter sleep and lifestyle habits.
Does melatonin help night owls?
Low-dose melatonin taken a few hours before your desired bedtime can help some people shift earlier. Talk to a doctor or pharmacist first and see our melatonin guide.
What chronotype am I?
A simple test: on a free day with no alarm, when do you naturally fall asleep and wake up? The midpoint of that sleep is a good indicator. A midpoint around 3–4 am is average; 5 am or later suggests a late chronotype.
Sources
- Facer-Childs ER, et al. Resetting the late timing of night owls has a positive impact on mental health and performance. Sleep Med. 2019.
- Knutson KL, von Schantz M. Associations between chronotype, morbidity and mortality in the UK Biobank cohort. Chronobiol Int. 2018.
- Wright KP Jr, et al. Entrainment of the human circadian clock to the natural light-dark cycle. Curr Biol. 2013.
- Wittmann M, et al. Social jetlag: misalignment of biological and social time. Chronobiol Int. 2006.
This article is for general information only and is not medical advice. See our Medical Disclaimer.