This one comes from the book Doodle Revolution by Sunni Brown:
“Grab a pen or marker, and try this simple exercise. Start with the following two design parameters: The line must go unbroken–don’t lift your pen from the page for about ten seconds–and the line should cross over itself multiple times, creating enclosed forms. Other than that, let the line have any quality or color you desire and let it drift around your page like a plastic bag in the wind. After about ten seconds, stop and spend some time shading in the forms created by the intersections. Pay attention to what effect this exercise had on you. Did you feel calm? More relaxed? Did you want to keep going? Whatever sensation you had, congratulations are in order. You just delivered glucose and oxygen-rich blood to the many strongly networked areas of your brain responsible for imagination and visualization. You also reminded yourself that you already know how to doodle, and it’s kind of fun” (Brown).
From “10 Things I Learned By Doodling For 100 Days Straight” by John Cutler:
When you do something every day, it’s ok if it sucks! You have another shot. If it’s your only shot, you’re more prone to freak yourself out.
The continuous line doodle can be a way to relieve stress and anxiety.