Adam Peaty

It hasn't always been a sweet ride. When I was 15, I almost hated racing in finals because I was so nervous. But as I got more experienced, I had to choose between fight and flight - and I've fought every time.

The thing about dancing - what it taught me all those years - is it gives you an amazing sense of discipline in forcing yourself to do things that you know are good for you but you don't really want to do.