When the NFL sent two teams to Melbourne in September 2026, five outlets called Dr. Meeta Singh in two days. Yahoo Sports, The Washington Post, The Atlantic, Fox Sports Australia and NBC's Dan Patrick Show all wanted the same question answered: does a team fly in early and acclimate, or arrive at the last possible moment and never let the body clock shift at all?
Asked on the Dan Patrick Show what she would have advised, Dr. Singh started with arithmetic rather than opinion.
"Science says that it takes about an hour a day to acclimatize. I would say at this point, nobody's going to have 17 days to adjust, right? So the earlier you get there, the better."
— Dr. Meeta Singh, The Dan Patrick Show
She was careful to add that she was not advising either club. The point was never to grade a decision from the outside. It was that the rule of thumb, roughly a day per time zone, makes a 17-hour shift impossible to absorb inside a short trip. A team choosing the short trip is choosing to compete while misaligned. That can be a defensible trade. It is only defensible if someone has priced it.
Sleep debt and circadian misalignment are two different problems
Most travel conversations collapse both into one word, jet lag, and that is where the planning goes wrong.
Circadian misalignment is the gap between the local clock and the internal one. It is what an early arrival is designed to close, and it responds to time, accelerated by well-timed light exposure, melatonin and sleep scheduling. As Dr. Singh told Dan Patrick, there is an entire protocol for this, and whether an early arrival helps at all depends on whether the team actually followed one.
Sleep debt is simply not having slept enough. It does not care what time zone you are in and it does not resolve on landing. It resolves with sleep.
Speaking to Yahoo Sports, Dr. Singh put the weight of her concern on the second one.
"The issue is whether they're going to get enough sleep the several days before the game."
— Dr. Meeta Singh, Yahoo Sports
A late-arrival plan only works if athletes step off the aircraft rested. Almost nobody sleeps a full night on a plane, not in a recliner, not in a lie-flat seat, and particularly not at the body sizes professional football requires. Add the days of disrupted routine that precede any major trip, and a team can land carrying a real deficit into a game it has spent a season preparing for.
"If you're exhausted or sleep-deprived, your performance slips. That's the worst-case scenario."
— Dr. Meeta Singh, Yahoo Sports
Why the deficit matters more than it sounds
The effects of insufficient sleep are not vague. Reaction time roughly doubles or triples when eight hours becomes six. Judgment and decision-making degrade before anyone feels impaired. Accuracy falls. And the research on injury is consistent enough to take seriously: when judgment is slower and less accurate at the same time, athletes put themselves in positions where the chance of injury rises.
None of that is exotic. It is the ordinary cost of arriving tired, applied to people whose margins are measured in milliseconds.
What a designed travel plan contains
The difference between a travel plan and a travel booking is whether these were decided on purpose:
- Banking sleep before departure. The days before a flight are the cheapest recovery a team will ever get, and they are usually the days a team is most disrupted.
- Shifting the schedule in advance. Small, deliberate bedtime moves in the days before travel do real work and cost nothing.
- Treating the flight as a sleep opportunity. Timing meals, controlling light and scheduling when players are encouraged to sleep in the air changes what they land with.
- Using light and melatonin on a protocol, not by instinct. Light is the strongest signal the body clock takes. Used well it accelerates adaptation. Used carelessly it works against the plan.
- Planning the return. The trip home is half the trip, and the week after a long journey is usually where the cost shows up in practice quality and injury risk.
The honest limit
No single game settles this argument. Outcomes in professional sport have far too many inputs for one variable to be isolated after the fact, and anyone who tells you a result proves a travel theory is selling something.
What the evidence supports is narrower and more useful. Insufficient sleep measurably degrades reaction time, accuracy, endurance, judgment and injury resilience. Whether a given travel plan will produce that deficit is knowable in advance and measurable during the trip. That is the level at which the decision should be made, before the plane takes off, with the schedule in front of you.
Planning a trip that crosses time zones?
Travel optimization is built around your actual schedule, not a template.
Coverage
- Jeff Eisenberg, "The Rams think they've figured out jet lag. Australia is about to test their theory," Yahoo Sports, September 10, 2026. Read
- "Sleep expert on NFL's Australia game challenges," The Dan Patrick Show, NBC Sports, September 9, 2026. Watch
- The Atlantic, September 2026. Read
- The Washington Post, September 10, 2026. Read
- Fox Sports Australia, September 2026. Read
- "Y! Sports AM: Week 1," Yahoo Sports, September 2026. Read
