Circadian Rhythm Shift from Jet Lag

Calculate jet lag recovery time and light exposure protocol to reset circadian rhythm based on number of time zones crossed, direction of travel, and chronotype.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate jet lag recovery time and light exposure protocol to reset circadian rhythm based on number of time zones crossed, direction of travel, and chronotype

Each component has a specific meaning:

  • Number of time zones crossed — The number of time zones crossed recorded for the scenario being assessed.
  • Direction of travel — The direction of travel recorded for the scenario being assessed.
  • Chronotype — The chronotype recorded for the scenario being assessed.

Note: Interpret the jet lag circadian shift result against the thresholds and context described above.

How to Use

Enter the number of time zones crossed, direction of travel, chronotype for the scenario you are assessing. Calculate jet lag recovery time and light exposure protocol to reset circadian rhythm based on number of time zones crossed, direction of travel, and chronotype. Use the jet lag circadian shift result to inform your calculation.

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Frequently Asked Questions