To achieve painless, or "normal," childbirth, Yoga offers exercises and postures which will foster the healthful development of secreting organs, especially those located within the waist and pelvic zones, and of the muscular and nervous systems. Health and women The Western fashion world demands that women have thin waists. Actually, a woman requires a larger waist because her liver, stomach, spleen, kidneys, pancreas, and colon are in the waist zone, and are proportionately larger than these .