Although hearing loss is pretty easy to prevent, most of us don't bother actually getting our hearing tested that often. If you're curious about how your hearing is doing, the folks over at AsapSCIENCE have put together a quick test you can administer yourself with nothing but a pair of headphones.
To do the test, put on a pair of decent headphones and change the video quality to 1080p. After the test is over, you'll get an explanation of why your hearing degenerates, and what types of sounds you can expect to lose over time. If your hearing seems bad already, it might be time for a visit to the doctor and a referral to an audiologist.
How Old Are Your Ears? [YouTube]