the same for all classes and that is the fact that you don’t get one-on-one attention and so you could end up performing every exercise incorrectly. naturally this comes down to the quality of your instructor and the size of the class. the bigger the class the more likely you will blend into the background and not get noticed (some of you may like this, but it won’t help you – .). to help avoid this situation turn up early and ask the instructor to help you through. if they are good they will make sure that you are near them so they can give you more attention. make sure 