Sometimes, when I carry something heavy, my arms hurt the next day. If I do situps, my stomach hurts later. I can do other things, such as typing, and that doesn't bother me.
Why do I get sore muscles? It's because I'm using ones I don't ordinarily use and they're protesting.
I confess I've let things slide. I've allowed winter weather to interfere with getting to Fitness classes, and my body isn't happy about it. I didn't used to have this problem, and I hope to get to more classes, weather permitting, so I won't have it any more. If weather's not permitting, I'll exert discipline and exercise at home.
The same thing happens with writing. I can blog every day because I've kept up that exercise, but I'm having a harder time finishing my work in progress. Lately, my brain hasn't exercised in that direction. No, I don't get headaches after doing so, thank goodness, but it's harder for me to focus. I fumble around trying to find the right words to say. I have a difficult time coming up with plot points and descriptions. My characters' thoughts elude me.
I've got tons of unwriting projects that need doing. One of them is getting my income tax papers together, which means balancing a checkbook that's been neglected for months. Still, I'm determined to spend more time each day on my novel. I need to get back in writing shape.
What about you? Do you ever get out of writing shape? If you let yourself slide for a while, is it harder for you to come up with ideas when you do write? Or, are you so disciplined you never let this happen? Do you have a routine you follow, no matter what? Please share.