These exercises can be performed while you are sitting for long hours. For example: while traveling by train, airplane, sitting in a lecture hall, or in an offic. Sitting for long hours can impede blood circulation, decrease energy, stiffen the joints, create exhaustion, and can cause thrombosis (blood clot). These exercises will take only a few minutes, and doing them regularly whenever you find yourself seated for long hours will do you a world of good.
Girls licking lips.