So here I am pretty pleased with my sedentary lifestyle that gives me plenty of quality time with my computer screen when I stumble upon a news report that says I'm digging myself an early grave.Yikes!It seems, if this report is to be believed, that sitting for long stretches of time has disastrous health effects. In fact, the health agency NHS says the kind of extreme sitting that I so embrace can lead to obesity, cancer and premature death.The report says, and get this, that I need to take a break from all my sitting. This report might as well have been written in Chinese because this is a foreign language to me.