There is no scientific evidence to suggest that yoga can help induce or speed up the onset of menstruation. Menstruation is a natural bodily process regulated by hormonal changes, and its timing is primarily influenced by the individual's hormonal cycle.
Yoga, however, can have positive effects on overall reproductive health and hormonal balance. Regular yoga practice can help reduce stress, promote relaxation, and support a healthy endocrine system. Stress reduction through yoga may indirectly contribute to more regular menstrual cycles for some individuals, especially in cases where stress has been a factor affecting hormonal balance.