I've been vegan for 15 years, and it turns out it makes a very big impact on the environment to eat fewer animal products, which cause more greenhouse gases than all of transportation combined.
I still like to keep tapes of the few minutes before the final take, things that happen before the session. Maybe it's superstitious, but I believe if I had done things differently - if I had walked around the studio or gone out - it wouldn't have turned out that way.
I get even more nervous singing when everyone's fallen silent, but I really try to communicate the meaning of the lyrics, and there's people there listening to that, and if they're moved by it, then I'm moved as well.