It seems everything we do has a warm up. I coach swimming and we warm and we warm down. So it can also go in writing. To get the best writing during a short amount of time many of us warm up. When I'm writing daily, I like to warm up and/or warm down on my blog by giving a brief run-down of what is happening in my manuscript on that day. Many use writing drills to warm up and improve writing skills.
My favorite, a technique I use not only to warm up but to improve my writing.
Challenge: write 26 sentences begin each with a different letter of the alphabet. Make sure you write them in order beginning with 'A' and of course ending with 'Z'
What is your favorite warm up or drill?