Training for a marathon is an active process. You have to think about what you're going to do, you have to come up with a plan. 

You have to design a training program that will get you stronger, get you faster, get you more fit and better prepared for your event, if you're going to finish your race on time. 

When you get injured, healing itself from that injury is an active process, but unfortunately by default, people revert into a passive process. 

Today on the Doc On The Run Podcast, we're talking about how healing a running injury is an active process.