When natural urges are suppressed, then ''vayu'' goes upwards and takes the genital tract in upward direction (retroversion condition). Due to this, severe pain occurs by which eviction of the menstrual blood is very difficult because of its upward tendency. After discharge of menstrual blood, pain subsides. It is known by the wise physician as ''udavartini'' because of the upward course of menstrual blood.[25-26]
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When natural urges are suppressed, then [[vayu]] goes upwards and takes the genital tract in upward direction (retroversion condition). Due to this, severe pain occurs by which eviction of the menstrual blood is very difficult because of its upward tendency. After discharge of menstrual blood, pain subsides. It is known by the wise physician as ''udavartini'' because of the upward course of menstrual blood.[25-26]