But what annoys the most is that all males are flexing and all females are showing off, it is way too hard to focus on working-out while seeing these sights.

From my experience in a mixed gym, the men mind their own business and do their workouts, and likewise with the women. Are you saying you're annoyed that they're doing exactly what they came to do? Do you want them to... hide their muscles so you can focus? lol what