These days, many people lead sedentary lives, either sitting in front of the TV or playing games on their tablet or smartphone. It means the problem with obesity is a big issue, and at the moment. it seems to be getting worse in the US. This is why so many people are constantly trying different diets to lose weight, and is why most of them fail because they are not active enough. It is very easy to get into the habit of sitting around. Your body becomes used to it and the weight just piles on.