The problem with writing is it is a sedentary occupation and if you are not a starving writer, then you can be cursed with a waistline that expands in time with your word-count.
I know some writers who can dictate their stories and with the advent of speech recognition software, are no longer tied to their desks. A friend of mine calls it walk and talk. Problem I have is that the rhythm of a story told out-loud is different for me than one that is written and I can't seem to 'tell' my stories in novel form - I have to either write or type my novels.
Others have taken a more mechanical approach:
I like this solution, basically you walk at 1 or 2 miles per hour while you type. If you write for 20 hours a week, you can easily burn 100,000 extra calories a year just by making this simple change to your writing desk. That is a whopping 385 calories a day, burned while you get your words on paper - all without breaking a sweat! Hopefully my lack of coordination would not be too much of a problem at 1mpg. Unfortunately, treadmills cost upwards of $5,000 and take up a great deal of space. Until I sell a few books and move to a bigger house or apartment, this one just isn't happening!
Recently, my GrandBoys got a Wii, and we have such fun playing tennis, golf, boxing and baseball with them that we decided to get one for our home as well. We also decided to invest in the Wii Fit as part of a special offer. I must say, I am pretty impressed.
My husband and I are each doing a 30 minute workout every morning, and in just a few days I have already noticed an improvement in my balance. The balance factor wasn't even one I considered, but as I have a slight curvature of the spine which makes me very clumsy - learning to correct my balance and control the muscles involved is hugely beneficial. That was unexpected. Whether the Wii will actually help control my middle aged spread is yet to be determined.
I am hoping to get to the point that I can complete a 1 hour workout each morning as a spur to weight loss and a motivating factor to get my writing done! I notice that I am less likely to dither about on the internet after exercise. One last fun point - even though I think my balance is horrible, the good posture that my mother drilled into me as a child hasn't deserted me, and the Wii Fit places my real age at 37. I'll take that!