Weekend Warrior: Smart strategy or digging an early grave?

The sins (of the eating kind) that we put up with through the working week, promising ourselves come hail or high water on the weekend, we'll work it off. Is it the right strategy? Or are we doing more harm than good? What do water, the squat and the humble chair have in common? How these everyday things can make a difference in your life. Finally a fitness tracker with a difference, Rajiv's take on the Goqii.