I never went through a biological clock experience. I never even heard it ticking.

A clock does not care how we spend our time, it simply does it's job and continues ticking.

Juvenile salmon have a biological clock that begins ticking as soon as they begin their trip to the ocean. They need to undergo changes that will allow them to adapt from fresh water creatures to salt water creatures and arrive at the ocean at the same time their bodies have completed the transformation.

We're in a hurry. Our domestic political clock is ticking, ... But you can't do this in a hurry-that's the dilemma.

It's sunk in. When the clock was ticking, I was really conscious of it. To go out like we did is demoralizing.

I don't think the clock is ticking yet for Arturo, but there is a clock. He has something to prove. He has to win, and he has to look impressive doing it.