fitness

"I've only been exercising for 5 minutes, and I'm already knackered! I'm SO unfit!"

Out of breath

This is aimed towards people who are new to exercise.  Who have plucked up the courage to get stuck in, but don't know what to expect.

But having said that, it applys to absolutely everyone!  It doesn't matter if you are brand new, or if you have been training for a while now, or even if you are competing on the international stage.  It is the same for everyone.