Altitude, red-eyes, time zones, heat waves: travel changes what your body can do for 48 hours. Most plans pretend it doesn't exist.
Your plan says Thursday: intervals. Your calendar says Thursday: red-eye to Denver. Only one of them is negotiable, and it is not the flight. Travel is one of the biggest short-term performance variables there is, and almost no plan accounts for it.
What a flight actually does
Dehydration from cabin air, disrupted sleep, hours of sitting, and, if you crossed time zones, a body clock that disagrees with the local one. None of it is dramatic on its own. Stacked on a hard session the next morning, it is how tweaks and terrible workouts happen.
Altitude and heat get 48 hours of respect
Landing somewhere high or hot means elevated heart rate, faster fluid loss, and lower output at the same effort for the first couple of days. The fix is boring and effective: cut intensity for 48 hours, front-load water before and during the flight, and let easy sessions be genuinely easy while your body catches up.
Plan the window, not just the workout
The move is to treat the 24 hours before and after travel as their own training block: hydrate before the flight, shakeout on landing day, key sessions either two days before or two days after. Same weekly work, rearranged around reality.
Obeo reads your calendar and the conditions where you are going, then rearranges the week before you have to think about it. Red-eye Friday? It already moved Thursday. Text it for free.