Blood in a sandal

Pay attention to yourself.

 Little things may catch you by surprise.

Case in point.

 Moving stuff around,

   and a few pieces fell.

Glanced at my foot,

 and moved along.

A while later,

 noticed the dampness,

   and it was more than sweat.

Nothing to panic about.

  It was a cut in one of those spots.

    Each move would cause it to reopen.

Caught it before leaving a trail.

Yes,

 I almost left a trail of blood.

A touch dramatic?

  Of course!

If it makes you reread the first two lines,

  the rest served their purpose.