Boy do I know about the traveling job! When I changed jobs almost 4 years ago, I was at about 150 lbs. I quickly ballooned up to 160, 170, 180, and finally 191. Too many road trips, fast food for lunch and often fast food for dinner. It's amazing to me that you couldn't make me eat a french fry now! Just plan plan plan and pack your foods to take with you when possible. I'm retiring soon so I won't have to worry about it much longer. Best of luck.