Slow Down Your Breathing
Breathing is the No. 1 thing that beginners and intermediate runners do wrong. It may be counterintuitive, but most distance runners are breathing too much. By trying to bring in so much oxygen so quickly, you’re not getting rid of all the CO2 in your lungs. As a result, you’re starving your lungs of oxygen—the exact opposite of what you want. Slow down your breathing, relax a little, and you might find running is much easier.
Land On Your Forefoot
Running can essentially be distilled into a series of single-leg jumps—which can be very hard on your joints. This is especially true for runners who are heel-striking—analysis shows that even on hard surfaces, barefoot runners who strike with their forefoot generate smaller collision forces than heel-foot strikers.
Here’s a great drill to teach your body to land on your forefoot: Using a line of tape on the ground, practice jump roping with one leg while landing on the forefoot. Stay on the line without looking down.