Arm movements (port de bras) are for expression. Modern ballet has the tendency to stray from the graceful arm movements and be more expressive, could be angular or etcetra.
Funny thing is, even hip hop has it's roots in ballet and jazz. So, dont know the basic dance for all dance categories before you try it.
As far as tights go. I think they are better suited for women as well.
I personally wear bike shorts.
The ladies are cool. PRobably cooler than the guys in aerobics. Why would you ant to surround yourself with men if you have a chance to be with women?
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