Same Weekly Workout Routine. Is this bad?

StunningLegerity

I've read on here that doing the same workout every day causes your muscles to "get used to it" (for lack of better wording), and it's recommended to mix up your workout routine for maximum benefits. I follow a weekly routine which repeats every week (see below for specifics). Will doing the same thing every week also produce the "muscles getting used to it" effect? I'm a big fan of routines, and I really like this one and stick to it, so I would rather keep going. I also don't want to hit a plateau. Any input?

My weekly routine (all hour long group classes at the gym):
Monday- zumba
Tuesday- pilates
Wednesday- body pump
Thursday- piloga
Friday- no classes, either a rest day or circuit training (if a time conflict arose that week for another class)
Saturday- advanced piloga
Sunday- yoga

StunningLegerity

Wow so just realized I posted this to food and nutrition. So sorry. Ignore this post, will move it to the correct location!