The spine is one of the most important parts of the human body. This is mainly because of the number of functions it is able to carry for the body. It is the main source of support for the limbs since all of them are somehow connected to the spine. The spine is also responsible for human posture. The way we sit, sleep or walk depends on how our spine is aligned. It actually carries a lot of weight at the end of the day and one needs to be careful to avoid overburdening it.