When Does Running Become an Addiction?

     According to psychologytoday.com/basics/addiction, the definition of addiction reads: "Addiction is a condition that results when a person ingests a substance or engages in an activity that can be pleasurable but the continued use/act of which becomes compulsive and interferes with ordinary life responsibilities, such as work, relationships, or health." Fair enough, right? So when is running a healthy everyday activity and when does it become an addiction?
     The truth is, I don't know exactly myself. I couldn't tell you how to classify the want to go running between skipping the last period of the day at school to get a run in before you go to work. I find myself stressing about getting time in to go running. When making plans and scheduling things I often find myself naturally wondering: "When will I get time to go running?" and pushing plans back to adjust for running time and along with it showering time.
     Along with the stress I feel from running, I have a desire to. Does this make me addicted? Not at all. I enjoy this activity and want to get better at it, so it's only natural to want to do well and spend time each day running a few miles. And when it comes down to it: if there's no time to run on a day I may be a little bit more stressed but I won't cancel plans or change anything just to get a run in. It's a want, not a need, and I don't rely on it.
     Once running interferes with ordinary life responsibilities, then you may have an addiction. If you feel the need to run everyday and are willing to skip work, school, or other responsibilities just to get some miles in doctors may be concerned. And what about your health? I've heard running twice a day can increase your speed and ability twice as fast. And I'll admit that I sometimes do run twice a day, but that's absolutely pushing it for me. Those who run three times a day or more may have addiction, as it may be interfering with your health.
      I'm no doctor, but I feel being able to tell the difference between a healthy activity and an addiction may be quite simple in the sport of running.