Here's another gym annoyance.
We sometimes do these moves in the kicbkoxing classes where you have to bob and weave. Jumping jacks are also a frequent requirement. A whole bunch of people pretty much just shake their fannies slightly instead of doing the moves properly. It's kinda like simulating the move without having to put in much real effort.
On the one hand, I understand that it's their life, and if they want to cheat themselves, that's their business. The reality, however, is that they're a distraction and they bring the energy level of the room down. Energy is contagious, and when people put in very little effort, then their neighbors will also tend to be motivated to do minimal work as well.
One of the worst offenders is this woman who just kinda twists her booty around slightly during our jab-and-cross moves. Now, you have to understand -- jabbing and crossing are both strong, energetic upper body moves. The jab is a quick little punch with nearly full extension. The cross requires twisting one's body around so as to put a lot of power into a punch. This gal just moves her hands around slightly and wiggles her tushie. It's annoying and bloody painful to watch.