This is the most important change you can make to your training. Most beginning runners train at one speed, running at moderate (or even max) effort every session. While that's enough to drive meaningful aerobic gains, it's not the most effective way to get fast. In fact, most coaches will refer to moderate effort runs as "junk miles."
The trick, for beginning runners especially, is to overcome the initial discomfort knowing that an enjoyable run awaits you on the other side of mile one or two. Easier said than done, right? Even as a veteran runner, I struggle with the first mile. Here's how you can make your first mile of a run better.