毎日運動することにしました。

N5 毎日 mainichi every day N4 運動 undou exercise, movement, physical activity N5 する suru do, perform, try

N5 毎 mai / goto, -goto.ni every, chaque, siempre N5 日 nichi, jitsu / hi, -bi, -ka day, sun, Japan N4 運 un / hako.bu carry, luck, destiny N4 動 dou / ugo.ku, ugo.kasu move, motion, change

N4 〜ことにする koto ni suru Indicates a voluntary decision made by the speaker or group, attaches to a verb, means decide to do N5 〜ます masu Used at the end of verbs, polite present or future form, makes the sentence more polite N4 〜し shi Indicates multiple reasons or qualities, connects clauses or adjectives, means besides that, and also N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements