(Mishnah): We do not afflict minors on Yom Kipur.

Explanation #1 (Rav Chunah): Our Mishnah means that we do not afflict minors on Yom Kipur [to complete the fast], and we do not train them [to fast part of the day], but a year before (Bar Mitzvah, if he is healthy, or) two years before (if he is weak), we train them [to fast part of the day].

Explanation #2 (R. Yochanan): Our Mishnah means that we do not afflict minors on Yom Kipur, but we train them a year before or two years before; they complete [the fast].

Question: From what age [does R. Yochanan hold that we train them to fast part of the day]?

Answer (R. Acha citing R. Chinena citing R. Yakov bar Idi citing R. Shimon ben Chalifta): It is like a boy of nine or 10 years.

(Mishnah): If an Ubrah (pregnant woman) smelled [food and craves it], we feed her until she feels settled.

A Choleh (sick person), we feed him according to experts (who say that if he will not eat, he is in danger). If there are no experts, we feed him according to himself (if he says that there is danger), until he says "[I ate] enough.''

(Gemara): Initially, [the Ubrah] inserts [her finger] in the gravy [of the food she craves], and sucks it. If this settles her, fine. If not, we give to her from the Isur itself. (SEFER MASHBI'ACH - on Yom Kipur, drinking is as severe as eating! Rather, we discuss feeding Isurim to someone in danger, which the coming Mishnah discusses; the Yerushalmi considers these Mishnayos to be one.)

Two Ubros came in front of R. Tarfon. He sent two Talmidim to them. He told them, go tell her that it is the great fast. They told the first, and she was calmed. He applied [to the fetus] "mi'Beten Imi Keli Atah'';

They said so to the second, and she was not calmed. He applied [to the fetus] "Zoru Resha'im mi'Rechem Ta'u mi'Beten Dovrei Chazav.''