As aligns the column you just need a bottom roller or a blanket roll to this exercise is very simple and easy , many people loves it and I think you'll like too.
Your spine and wellness to help you live the life with a smile on your face, what you need to do this exercise very simple and nice is a blanket roll or a rolled up towel in place, what is more important is that you have to make sure that the towel or blanket with rola is long enough to support the head all the column and also the pelvis.
How to do this exercise we need and why we do it we spend too much time on the sofa or in front of the computer and have the position for later. Also going to serve for the chest muscles.
Here that tense this exercise is to stretch your chest open posture, and to put right the alignment of the spine can now show as it is the exercise to see two tricks to be the training deeper.

For beginners you lie on your back with your spine straight over the shoulder with the knees bent and the arms slightly extended to the sides lie completely relaxed during 3 minutes if you can find the fund's too firm, you can start with a towel or blanket roll, if you feel comfortable with this instrument there are two tricks that you can do to stretch, tighten the lower part of the back in the background using the abdominal muscles and tuck the chin by doing this you are increasing the dorsal extension and by helping to open your posture even more.
The second trick you can increase this is tremendous placing the fingers behind the head, this is a end quite strong so be careful with your shoulders especially if you have or have had a shoulder injury but if you feel comfortable, this is a great experiment to open your posture and stretching the chest after doing this training for three minutes, get up quietly and gives a nice walk should notice more flexibility to the spine straight and also easier to breathe deeply if you can be this is tremendous for three minutes a day, you'll notice the posture more upright column and more alienated, and that should keep you very well.