I love me some good ole science. I especially love the guys over at ASAP Science. They do a really great job of explaining how things work on a scientific level that makes it super easy to learn and enjoy. Seeing how most everyone reading this listens for a living, this video seemed quite appropriate. I turned 31 years old just the other day and boy was this test accurate. Please, please take special care of your ears. Your inner ears are one (two?) of those organs that don't regenerate itself :-( Now get out your favorite headphones and take a listen!