We're all conditioned that we shouldn't like our brothers and sisters, that we should be angry and fight. But that's abnormal. A lot of people think that the way Serena and I are with one another is weird. It's not.

If you give me a short shot I will attack you. I'm not a baseliner who rallies. I try to get the point over with.

The most fun part about working out is being done - getting through the workout, let's be honest. But that feeling afterward? Yeah, that's worth it.

We've been training and playing full-time since we were 18 and 19. So after tennis, we'll be excited to see what it's like to have more free time.

Just believe in yourself. Even if you don't, pretend that you do and, at some point, you will.

Workout. Lead a balanced life and try to have fun. It's what you make it.

Of course, I want to be number one. But being happy and healthy is the most important thing.