Similar practices are popular among Japanese women called 産後の肥立ち "Sango no hidachi" and Korean women called 삼칠일 "Samchilil" for at least 21 days.[13] The new mother is given special postnatal foods, such as seaweed soup in Korea. Samchilil is practiced in addition to other traditions encompassed in sanhujori, which is Korea's version of postnatal care. During this period of time that could extend beyond the 21 days, women followed principles that emphasize activities and foods that keep the body warm, rest and relaxation to maximize the body’s return to its normal state, maintaining cleanliness, eating nutritious foods, and peace of mind and heart.[14]