From Obesity Panacea:
The greater the number of breaks taken from sedentary behavior, the lower the waist circumference, body mass index, as well as blood lipids and glucose tolerance. This was true even if the total amount of sedentary time and physical activity time were equal between individuals – the one who took breaks more frequently during their time at the office or while watching television was less obese and had better metabolic health. Importantly, the breaks taken by the individuals in this study were of a brief duration (<5 min) and a low intensity (such as walking to the washroom, or simply standing).
When I sit down to write I consciously make sure I have my coffee and all the rest of my creative accoutrements, including my coffee thermos. Clearly, this is not a good idea. Coffee refills should come from the pot in the kitchen, even if it does mean a break in my writing.
How many obese barbers do you know?