how long do you guys work ? This works for a couple of hours, but I can't imagine how it feels after coding 14 hours. Best could be to change after several hours between a standing and sitting position.
I can't imagine sitting in a chair for 14 hours without even a few 15 minute breaks. You are setting yourself up for neck injury and long term back pain. (Speaking from experience, as someone who used to sit in a chair for similarly long stretches and thought it made him tough. No, it made me stupid.)