I think this is a key item. Having been a road warrior in the past a few things are for certain. 1.) You will eat like $hit, and 2.) Have little time for 'consistent' exercise.
Best tips that worked for me. AVOID the Crapplebee's, TGIVomits, and most chains-- in addition to the fast food places.
Your Fork and Spoon are the best pieces of exercise equipment.
Tips:
1.) Avoid Soda/Pop, any beverage with High Fructose Corn Syrup
2.) Given-- traveling on the road, some "Important Dinners with the customer, boss, team are inevitable". Seriously, attempt to only eat HALF of what you are served. (Resturant portions are way too large. The average single restaurant portion today would feed 4 in the 1970's.)
3.) Avoid the fast food joints or stick with a healthier Subway 6". Better yet if you are flying solo, hit the grocery store, buy some "real food" and DIY, or even some of the healthier prepared stuff.
4.) Take the stairs.
5.) Park furthest from the door.
6.) Time permitting, think old school Gym Class exercises. Jumping Jacks, Sit-ups, Push-Ups.