Psoas muscle attaches to your lower spine and to your thigh bone. If it's tight (sitting too much?) it pulls your lower back. It's one of the common causes of lower BACK PAIN! If you can stretch this regularly then your lower back may feel a lot better!
Tesla said if you can understand the importance of and you can understand the universe. 432 an octave down an octave down from that octave from that from that from that then it doubles. Back to Tesla, stimulates the Pineal gland. Isn't the universe grand?