Believe it or not, there are 16 circles in the below image.

As far as head scratchers go, this optical illusion from Reddit isn't the most challenging but doesn't everyone say that once they've solved it?

If you're having trouble spotting them, we suggest scrolling back and forth over the image quickly.

Let us know how long it took you to see them in the comments.

There are 16 circles in this image from interestingasfuck