Write, Walk, Write

If walking or biking is among your exercises, I recommend walking after you finish writing. You don't even have to make a conscious effort to continue to work through your ideas in your head. Somehow, the ideas will continue to percolate there as you walk. Running or biking might work too, in the same way. What walking has is its more relaxed pace. Sitting at a desk removed from nature is not conducive to thinking per se. Almost everywhere else is better than your work desk, though that could be good for the actual writing.