I would take math over chemistry any day of the week
Plays can be loud, aggressive and physical, yet you don't stand up for those. You don't stand up when you're listening to music at home either, do you? Just saying.
You can play turns in q3 too?
Clan Arena when you play turn based team battle and start with full armor and all weapons except bfg rules.
I don't understand why you'd want to stand and move around while watching Opeth or Dream Theater play live; it's not exactly like they have anything to mosh to. To be honest, I'd prefer to sit and watch them play.
Well, at a play you're mostly trying to pay attention to what's going on on-stage. Concerts are more about feeling the music and the whole sense of excitement in the atmosphere. And it's a lot more exciting when you're in the middle of a crowd of people, jumping around, yelling obscenities, throwing up the horns, headbanging, etc. That just seems like a huge part of metal shows as far as I'm concerned.
edit: I actually do like to headbang when I'm listening to metal at home. It's just kinda goofy to do it by yourself.
It's called watching a DVD.