Resetting Your Internal Clock After Traveling: A Neuroscience-Based Step-by-Step Guide
Traveling across time zones is an exciting adventure, but it often comes with the unwelcome guest known as jet lag. Jet lag occurs when your body’s internal clock, or circadian rhythm, is out of sync with your new environment. This guide leverages the latest neuroscience insights, particularly those from Dr. Andrew Huberman, to help you reset your internal clock efficiently and enjoy your travels to the fullest.
The Impact of Travel on Circadian Rhythms
Imagine your body has its own 24-hour clock, meticulously regulating sleep, hunger, hormone release, and other vital functions. When you cross multiple time zones, this clock gets disrupted. For instance, traveling from New York to London involves a 5-hour time difference, which can throw your circadian rhythms off balance. Common symptoms of jet lag include difficulty falling asleep, waking up too early, daytime fatigue, irritability, and impaired cognitive performance. Studies show that the more time zones you cross, the more severe the jet lag symptoms, with each hour difference potentially causing a day’s misalignment.
An out-of-sync internal clock doesn’t just make you feel tired — it can affect your overall health, mood, and productivity. Research indicates that prolonged circadian misalignment can increase the risk of cardiovascular diseases, metabolic disorders, and even certain types of cancer. On a daily basis, it can lead to decreased alertness, poor decision-making, and reduced efficiency at work or during your travels. By resetting your internal clock, you enhance your well-being, maintain high energy levels, and ensure you make the most of your time in a new location.
Overview of Neuroscience-Based Approaches
Neuroscience has shed significant light on how our internal clocks operate and how they can be adjusted. Dr. Andrew Huberman, a prominent neuroscientist, has extensively studied the mechanisms behind circadian rhythms and offers practical strategies grounded in scientific research. His work emphasizes the role of light exposure, neurotransmitter regulation, and sleep quality in maintaining and resetting our internal clocks.
Understanding the Internal Clock: Circadian Rhythms
What Are Circadian Rhythms?
Circadian rhythms are natural, internal processes that follow a roughly 24-hour cycle, influencing sleep-wake patterns, hormone release, body temperature, and other essential functions. These rhythms are present in most living organisms, including humans, and are crucial for maintaining physiological and behavioral homeostasis.
Factors Influencing Circadian Rhythms
Several key factors influence circadian rhythms:
Light Exposure: Natural sunlight is the most potent cue for the SCN, while artificial light can also play a significant role, especially in urban environments.
Meal Timing: Consistent eating schedules help reinforce your body’s internal clock.
Physical Activity: Regular exercise can stabilize circadian rhythms by promoting alertness and improving sleep quality.
Social Interactions: Engaging in regular social activities can also support circadian alignment.
Dr. Andrew Huberman’s Insights on Resetting the Internal Clock
Importance of Light Exposure
Dr. Huberman emphasizes that light is the most critical factor in resetting your internal clock. Morning sunlight, particularly within the first hour after waking, helps suppress melatonin — the hormone responsible for sleepiness — and boosts cortisol levels, which promote alertness. Aim for at least 20 minutes of natural sunlight exposure each morning to kickstart your day.
The Role of Dopamine and Serotonin
Neurotransmitters like dopamine and serotonin play essential roles in regulating mood and alertness. Dopamine enhances motivation and focus, while serotonin contributes to feelings of well-being and happiness. Engaging in physical activity and getting adequate light exposure can naturally boost these neurotransmitters, helping you feel more awake and positive as you adjust to a new time zone.
Sleep Architecture and Quality
Quality sleep is divided into different stages: light sleep, deep sleep, and REM (rapid eye movement) sleep. Each stage serves a unique function in physical and mental recovery. Disruptions to your circadian rhythm can fragment your sleep architecture, leading to insufficient restorative sleep. Dr. Huberman advises prioritizing sleep hygiene — such as maintaining a cool, dark sleeping environment and avoiding caffeine in the afternoon —to enhance sleep quality and support circadian alignment.
Step-by-Step Guide to Resetting Your Internal Clock
Pre-Travel Strategies
Start preparing your body a few days before departure:
Adjust Sleep Schedules: Shift your bedtime and wake-up time closer to your destination’s time zone by 30 minutes each day.
Optimize Light Exposure at Home: Increase morning light exposure and reduce evening light to start aligning your internal clock with your destination’s schedule.
Tip: With World Clock Master, you can check sunrise and sunset times in your destination. This helps you mimic your future daytime and nighttime light exposure as much as possible, even before you leave home.
During Travel
While in transit, manage your exposure to light and maintain healthy habits:
Manage Light Exposure: Wear sunglasses when traveling west to delay your internal clock or seek sunlight when traveling east to advance it.
Preventing Dehydration-Related Fatigue
Dehydration — common during long flights due to low cabin humidity—exacerbates fatigue, headaches, and grogginess.
Sufficient water intake ensures better circulation, healthier blood pressure levels, and more efficient transport of oxygen and nutrients to muscles and the brain.
Regulating the Body’s Internal Clock
Meal times act as a powerful “zeitgeber” (time cue) for your circadian rhythm. Eating at local mealtimes in your new time zone gives the body important signals to adjust hunger, metabolism, and energy levels accordingly.
By shifting your eating schedule to match the local daytime, you reinforce other cues — like light exposure and sleep schedules — that help your body reset faster.
Easing Digestive Transitions
Gastrointestinal functions also have their own daily cycle. Sudden dietary timing shifts without gradual adjustment can contribute to discomfort and sluggishness.
Keeping your stomach “on time” with your destination by adopting local meal patterns helps reduce digestive issues and supports overall well-being during and after the flight.
Upon Arrival
Maximize your adjustment upon reaching your destination:
Maximize Daylight Exposure: Spend as much time outdoors in natural light as possible, especially in the morning, to help reset your internal clock.
Avoid Artificial Light in the Evening: Limit exposure to screens and bright indoor lighting in the hours leading up to bedtime to promote melatonin production.
Establishing a New Routine
Create a consistent daily schedule to reinforce your new internal clock:
Consistent Sleep and Wake Times: Go to bed and wake up at the same time every day.
Incorporate Physical Activity and Meal Timing: Engage in regular exercise and eat meals at times that align with your new time zone to maintain balance.
Practical Neuroscience-Based Techniques
Light Therapy and Darkness Control
Use light strategically to influence your circadian rhythms:
Morning Light Therapy: Use bright light lamps or spend time in natural sunlight in the morning to signal wakefulness.
Evening Darkness Control: Dim the lights and avoid screens an hour before bedtime to enhance melatonin production and promote restful sleep.
Strategic Napping and Nutrition
Implement napping and dietary strategies to support circadian alignment:
Strategic Napping: Take short naps (20-30 minutes) if you’re feeling excessively tired, but avoid long naps that can interfere with nighttime sleep.
Balanced Nutrition: Eat meals rich in proteins, complex carbohydrates, and healthy fats to support sustained energy levels and circadian health. Avoid heavy or sugary foods close to bedtime.
Supplementation
Consider supplements to aid your adjustment:
Melatonin: Taking melatonin supplements can help regulate your sleep-wake cycle, especially when traveling east. Dr. Huberman recommends consulting a healthcare provider for appropriate dosage and timing.
Caffeine: Use caffeine strategically to boost alertness during the day, but avoid it in the late afternoon and evening to prevent sleep disturbances.
Overcoming Common Challenges
Managing Sleep Disorders Post-Travel
Jet lag can exacerbate sleep disorders such as insomnia or excessive sleepiness. To manage these:
Stick to Your Schedule: Maintain consistent sleep and wake times even if you’re struggling to fall asleep or wake up.
Relaxation Techniques: Practice deep breathing, meditation, or gentle stretching to promote relaxation and improve sleep quality.
Seek Professional Help: If sleep issues persist, consult a healthcare professional for personalized advice and treatment options.
Coping with Mood Swings and Cognitive Impairment
Jet lag can affect your mood and cognitive functions. To stay balanced:
Regular Exercise: Engage in physical activity to boost endorphins and improve mood.
Mindfulness Practices: Incorporate mindfulness or meditation to reduce stress and enhance mental clarity.
Stay Connected: Maintain social interactions with friends and family to support emotional well-being.
Adapting to New Schedules in Different Environments
Flexibility and resilience are key to adapting to new routines:
Gradual Adjustments: If possible, make small changes to your schedule instead of abrupt shifts.
Patience: Allow your body time to adjust and avoid pushing yourself too hard during the transition period.
Stay Positive: Maintain a positive mindset and view the adjustment period as a temporary phase.
Long-Term Strategies for Maintaining a Healthy Internal Clock
Consistent Daily Routines
Establishing regular routines reinforces your circadian rhythms:
Sleep Regularity: Go to bed and wake up at the same time every day, even on weekends.
Meal Regularity: Eat meals at consistent times to support metabolic and circadian processes.
Activity Regularity: Schedule regular physical activities to maintain energy levels and promote sleep quality.
Continuous Light Management
Adapt your light exposure to maintain circadian alignment throughout the year:
Seasonal Adjustments: Modify your light exposure based on seasonal changes, such as increasing light in the winter to combat shorter days.
Lifestyle Adaptations: Adjust your indoor lighting and screen time habits to align with your natural circadian rhythms.
Monitoring and Adjusting Habits
Example of sleep tracking app. Credit: Sobakhul Munir Siroj, Behance.net. Use technology and self-assessment to track and optimize your circadian health:
Sleep Trackers: Utilize wearable devices or smartphone apps to monitor your sleep patterns and identify areas for improvement.
Self-Assessment: Regularly assess how you feel in terms of energy levels, mood, and cognitive function to make necessary adjustments to your routine.
Conclusion
Resetting your internal clock involves a combination of strategic light exposure, consistent routines, and mindful habits. By implementing Dr. Andrew Huberman’s neuroscience-backed techniques, you can effectively overcome jet lag, enhance your health, mood, and productivity, and enjoy your travels with renewed energy and clarity. Remember, your internal clock is your body’s compass — nurture it, and it will guide you to optimal well-being.
Sources
1. Huberman, A. (Host). (Ongoing). “Huberman Lab Podcast.” Huberman Lab.
2. Davis S, Mirick DK, Stevens RG. (2006). “Night Work and Risk of Breast Cancer.”
4. Eastman CI, Burgess HJ. (2009). “How to travel the world without jet lag.” Sleep Medicine Clinics
5. Arendt J. (2010). “Shift work: Coping with the biological clock.” Occupational Medicine (London)