I actually studied literature at university, so I'm much more of an arts-based person, but I remember I actually did enjoy physics because you got to do weird experiments. I remember we did this thing with static where we all had to put our hands on this static ball to see that your hair would all stand on end.
It was only after university that I said to myself that I had to take the risk and have a serious go at acting. It's such a bizarre profession, because you have to be totally tough to deal with all those times when you're being turned down, and then really soft in order to access your character's emotions.