Make jet lag history with highly personalized jet lag plans. Trusted by 1.7M+ travelers — and rated "as good as it's going to get" by The New York Times.

• The Wall Street Journal: "Indispensable"
• Condé Nast Traveler: "Say goodbye to jet lag"
• WIRED: "Will help reset your [circadian] clock"
• Travel + Leisure: "Game-changer"

PROVEN RESULTS
Based on ~130000 post-flight surveys:
✓ 96.4% of travelers who followed the advice avoided severe jet lag entirely.
✓ Travelers who ignored the advice were 6.2x more likely to experience severe jet lag — and 14.1x more likely to experience very severe jet lag.

Used by astronauts Formula 1 drivers elite athletes and millions of travelers worldwide.

YOUR FIRST PLAN IS FREE
Your first jet lag plan is free – no commitment is required! After your free plan you can choose to purchase plans as-you-go or subscribe for unlimited plans.

WHY WE MADE TIMESHIFTER
Getting the timing right is both complex and unintuitive. We created Timeshifter to make circadian science accessible and help you apply it to conquer jet lag.

Timeshifter helps you tackle both the underlying cause of jet lag – the disruption of your circadian clock – as well as reduce the disruptive symptoms such as insomnia sleepiness and digestive discomfort.

Timeshifter was developed with Dr. Steven W. Lockley. A Harvard Medical School faculty member for over 20 years and former Neuroscientist at Brigham and Women's Hospital he is an international authority on circadian rhythms and sleep with nearly 30 years of research experience. Dr. Lockley helps NASA astronauts and mission controllers Formula 1 drivers NBA players and Olympic athletes perform at their best.

KEY FEATURES
✓ Circadian Time™: Advice is based on your body's clock
✓ Practicality Filter™: Adjusts advice to the "real world"
✓ Quick Turnaround®: Automatically detects short trips
✓ Pre-travel advice: Start adjusting before departure
✓ Push notifications: View advice without opening the app

THE REAL JET LAG SCIENCE

• In your brain a circadian clock helps manage the regular rhythm of your day.
• Jet lag is caused when your sleep/wake and light/dark cycles shift too quickly for your circadian clock to keep up.
• Light is the key time cue to "reset" your circadian clock so the correct timing of light exposure and avoidance is the only way to adjust to new time zones quickly. If your timing is wrong it will make your jet lag worse.

JET LAG MYTHS VS. CIRCADIAN SCIENCE
Misleading advice on conquering jet lag — often promoted by non-experts — not only fails to help travelers but can make jet lag symptoms worse and may even cause harm.

Generic sleep advice exercise hydration grounding dietary supplements special diets or fasting won't solve jet lag because they don't "reset" your circadian clock to new time zones.

These statements have not been evaluated by the Food and Drug Administration. Timeshifter is not intended to diagnose treat cure or prevent any disease and is intended for healthy adults 18 years of age or older. Timeshifter is not intended for pilots and flight crew on duty.

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