This is actually a very common problem with any fitness routine. Life is never perfect and almost everyone will have something in their life that will interrupt their workout schedule. You just have to adapt as best you can and keep moving forward. Never let yourself fall into the “All or Nothing” crowd.
With STS we already allow you to take off one week after completing every mesocycle. In your case if your week off doesn’t coincide with your travel plans just move your free week to when it does. If you have to miss another week soon thereafter, just pick back up as soon as you can. Don’t let interruptions knock you off your routine, just do the best you can.
