We cannot equate this with a purely biological freedom or vitality, or spontaneity. Bergson and His Philosophy J. Alexander Gunn. It is a more serious difficulty that Paul knows of no Longobardic king with a name which we can equate with Sceaf.
But this posture makes your pelvis rock forward into an anterior pelvic tilt, which consequently creates an increased lumbar curve (lordosis). Unfortunately, other tissues such as the muscles described above adapt to this posture over time, which contributes to back pain and injury.
The muscles around your spine and in your abdomen contribute to lower back health. Loose or weak abdominal muscles can cause lower back pain by encouraging a forward-leaning posture. Abdominals work in conjunction with back muscles when bending, straightening or lifting. This is why weak, damaged or separate abdominal muscles can be associated with lower back pain.