I think we are slowing being taken over by gnats.  Sure, they might be small but they travel in gigantic swarms.  And I'm pretty sure their mission is to fly into my mouth and choke me to death... or fly into my ears and eat my brain.

How do you keep them away? Some told me that they hover around the highest point so I should make a fist and hold it in there air.  That way, they'll fly around my fist, rather than my face.

Have you tried this?  Does it work?