the trick is to keep breathing

Ok, take a look at these pictures. Just look at 'em for a few seconds.







Are they moving? Quickly or slowly? According to the email I got with these pictures, these are supposed to measure your ability to handle stress. Like, when criminals see them, they see the first one spinning like mad, and kids and old people don't even see the movement at all.

For me, they move, but very slowly. Like they're breathing.

By the way, this is a completely valid scientific procedure. Ahem.