How Many Circles Do You See?

My mind is playing tricks on me.  Or am I playing tricks on my mind?  Either way it is fun to challenge myself with these fun brain teasers.

One circle mixes with another and then another and then I'm confused.  How many circles do you see?

Don't give up, you can do it.  And if you want to check your answer and see if you are right, keep scrolling.

The correct answer is 11.  That wasn't too hard was it?  Thanks for teasing your brain!