|Something tells me I would injure myself on this.|
The truth is, writing isn't all that different from waking up half-an-hour earlier to fit in some morning yoga. It's one-half discipline, five-halves hard work. Your brain needs the exercise and practice as much as your rump would.
If you're stuck in a certain scene or aren't feeling one of your WIPs, it's okay to let them sit for another day or two. Not dashing out a novel in a month or two doesn't make you a fraud. The important thing is to write something. Anything. Start a journal. Do fifteen minute flash fiction. Write about how you wish you could write, but seem to be stuck in neutral. Or write about the creeper who keeps not-so-discreetly picking his nose at the table next to you in the coffee shop (I know who you are dude and next time I'm sitting far, far away.). Just as with flab-flushing and muscle-massing work outs, your writing brain needs exercise to stay in shape. So pick a time and place and put your fingers on the keys. You never know when inspiration will strike, and by staying in shape you'll be ready to tackle that next SNI.