山登りは体力的にも精神的にもきつい

N5 山 yama mountain N1 体力 tairyoku physical strength N3 精神 seishin mind, spirit, mentality N3 きつい kitsui tight, hard, intense, severe

N5 山 san, sen / yama mountain, montagne, montaña N3 登 tou, to, dou, shou, chou / nobo.ru, a.garu ascend, climb up, monter N4 体 tai, tei / karada, katachi body, substance, object N4 力 ryoku, riki, rii / chikara power, strength, strong N3 的 teki / mato bull's eye, mark, target N3 精 sei, shou / shira.geru, kuwa.shii refined, ghost, fairy N3 神 shin, jin / kami, kan-, kou- gods, mind, soul

N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜も mo Means also, adds another similar item, often replaces particles such as wa ga or o N5 〜は wa Marks the topic of the sentence, indicates what the sentence is about, can contrast with another element, organizes main information