The flip side.*

Today, I'm a rock,
Today, I will sink.
I splash and I flail
Around in the drink.

I am upset and stressed,
My chest, it feels tight.
Every stroke is a battle,
Every length is a fight.

I cough and I struggle,
I go through the motions,
Today, I'm distracted.
A creature of emotions.

*edit: This one makes more sense if you have read this one first