Oxygen

Oxygen... 

Nothing much to think about. 

It's in the air we breathe.

It's even in the water we drink. 

What if:

Oxygen is really slow acting poison,

and it takes 75-100 years to kill us?

Yin and yang, good and bad, all in one.

That which keeps us alive also slowly kills us.

Also consider:

Air & Water are two of the most

destructive forces on earth. 

But that's all too much to consider 

While thinking of your own mortality.