Any scientific data to prove that a straight spine keeps the brain alert? Or just believe because some baba said so? I was taught that its the brain which controls the whole body. Here it is completely different!! How can the spine control brain??

B.K.S. Iyengar, was the founder of the style of yoga known as "Iyengar Yoga" and was considered one of the foremost yoga teachers in the world.

Yes.this does wonders.be conscious of your posture.