Scott and Mike discuss a strategy for training and traveling: “Programmus Interruptus” 
Visit scottabelfitness.com/interrupt for a detailed written breakdown of what we’re talking about, plus a video demo.
The main idea is, if you're traveling and need to substitute in a workout in your hotel room (or what-have-you), you can stay flexible by mixing whole body training with some bodypart emphasis. This way, you might, for example, replace your shoulder workout with a whole body workout that has a shoulder emphasis… but if you miss a day or two (because you're traveling and things are up in the air) it's not as though you've neglected the rest of your body. You've still kept things “stimulated.”