No matter the quality of your prose, the act of writing itself leads to strong physical and mental health benefits, like long-term improvements in mood, stress levels and depressive symptoms. In a 2005 study on the emotional and physical health benefits of expressive writing, researchers found that just 15 to 20 minutes of writing three to five times over the course of the four-month study was enough to make a difference.
You don't have to be a serious novelist or constantly reflecting on your life's most traumatic moments to get these great benefits. Even blogging or journaling is enough to see results. One study found that blogging might trigger dopamine release, similar to the effect from running or listening to music.
I found all this interesting because I started blogging again when I was depressed. I think I've mentioned this but blogging seems so 2007. Unless people are making money at it no one blogs anymore, because facebook is easier and we are all lazy.