While playing tennis yesterday with a friend, he asked me for some tips about traveling healthy. He is about to head off on a trip for a year. This advice applies to travelers for shorter trips but especially for frequent or longer term travelers.
The concept is the importance of establishing a routine. Traveling can throw off your whole schedule (and I understand sometimes that is the point!) but to remain healthy and fit on the road, routine is key. I recommend a morning routine to include a workout and a focus on hydration and eating light (fruit/smoothies/juice). I also have friends who tell me they benefit greatly on the road by their morning yoga, meditation and breathing exercises as well. Any of these things can help provide a framework for your morning routine.
My morning routine is what keeps me on point on tour and if I do miss a morning, by shear momentum my body will want to make up for it with an afternoon or evening workout.
All that being said most importantly- Don't get stuck in your routine! Routine can help to get you in a rhythm but then make sure to change your workouts up and keep yourself and your mind challenged!!