These two lines are made up of collagenous fibres also known as fascia. Thomas Myers explains that fascia is a web of connective tissue and this connective tissue runs through every part of the human body; from top to bottom, the whole body is connected. Myers views fascial connections through a series of lines, the SFL and SBL being two of them. The SFL and SBL are foundations of supporting the body; due to the role of these lines, they do not allow the body to ‘curl over into flexion exemplified by foetal position’ as the fascial web in the lines ‘support the body in full upright extension’. (Myers, 2014:75) The lines are connected and if there is a fault at any point in the line, it will affect a different part of the line, this is why issues such as an anterior pelvic tilt will occur, which causes many incorrect postural tendencies further in the