What do Andrew and his expert guests recommend for preparing and managing jet lag on eastward trips?
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provides several strategies for managing jet lag, particularly when traveling east, which is generally harder because it involves going to bed earlier. Here are some key recommendations:
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Know Your Temperature Minimum: Finding your temperature minimum—your lowest body temperature during the night—can help you adjust your circadian rhythm. Light exposure, exercise, and eating in the four to six hours after your temperature minimum can advance your clock, which is crucial for eastward travel 1.
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Gradual Adjustment: Start shifting your schedule a few days before the trip. For example, if you're traveling from California to Europe (a nine-hour shift), begin waking up earlier and get bright light exposure from artificial sources at the new desired wake-up time 1.
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Use Light to Shift Your Clock: Light is the primary way to adjust your internal clock. Viewing light at specific times relative to your temperature minimum can help you adjust more quickly. Avoid light exposure during your circadian dead zone, as it won't help shift your clock 1.
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Eat According to Local Time: Begin eating meals according to the destination time zone as soon as you arrive. This helps synchronize your peripheral body clocks, like those in your liver, with the new time zone 2.
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Exercise: Regular exercise can help shift your circadian clock and mitigate some of the jet lag effects, especially as adjusting grows harder with age 3.
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Melatonin: Use melatonin sparingly for acute adjustments, but be cautious of dosage as it can have hormonal effects 4.
By preparing in advance and strategically using light, exercise, and diet, you can shift your biological clock to minimize jet lag effects on eastward journeys.
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