Check out this new segment of Britney's exclusive interview with Entertainment Tonight. Britney talks about her work outs and what makes her comfortable on the road.
"I'm really excited. I'm probably going to be extra nervous the day before. We've been working hard for, like, two months now and everything's coming together really good."
"It can be kind of [grueling], especially when you're on stage and you're on your eighth number. You get really winded and you're like, 'How can I do the rest of the show?' But I've been training for a while and I actually - before I come to rehearsals - I've been working out and stuff like that so I won't have that predicament."