Step 1: The Landing
How should we land then? Simple: on the midfoot, or the balls of the feet. In doing this, the calf muscles absorb more of the force than the knee. The is preferable because the calf is a muscle that can be improved and strengthened, whereas the knee is a joint, and extreme pressure on joints can cause aches, sprains, and even tendon tears.
When you land on your midfoot, your stride will be much shorter. This is OK! In fact, a short, choppy stride is what we're after. The balls of your feet should strike the ground underneath your body (see the diagram).