The way most people eat apples wastes a lot of the fruit.
This according to Elie Ayrouth at Foodbeast, who says a coworker tipped him off to a better way to approach the food.
Most people eat apples from the side like this:
Eating the apple from the top down ensures that you get some of the soft, desirable fruit in every bite. Just rip out the stem:
Ayrouth estimates that you get 15 to 30% more of the apple by eating it this way.
Here's a video Foodbeast made explaining the method: