Posture at ease...before writing on the topic I must focus on some sitting standing and sleeping positions.wrong posture can lead to a  cracking backacke with a visible deformity which actually isn't.loss of calcium .vitamin d deficiency.least exposure to sunlight.no bending excercise..loss of oxygen in tissues  are the blunder causes of bad spine.so dear stay hydrated .switch over to yoga.eat maximum amount of calcium.maintain ur erect posture..n enjoy a good age...