Performing the: A Step-by-Step Tutorial Spine Stretch
Extend your arms straight out in front of you at shoulder height, keeping your shoulders down and away from your ears.
Inhale deeply and as you exhale, start to round your spine forward from the top of your head, imagining you're peeling your spine off a wall behind you.
Continue to curl forward until your hands reach towards your toes, or as far as is comfortable for you, keeping your abdomen pulled in so you feel a nice stretch in your lower back.
Slowly roll back up to the starting position, restacking your spine one vertebra at a time, and repeat the exercise as desired.