Actually, I think the main key to productivity in writing is to have the most regular habits you can. (awesomegang.com)
For people who read a lot on the web or need to scan pages quickly, the page up and page down keys are vital keys to productivity. (iphonehacks.com)
Study after study has provided consistent results showing employees general well being / mental health is the real key to productivity and motivation. (aneliteresume.com)