This morning, I saw a lot of rabbits jumping rhythmically in my garden.
The law of movement is governed by rhythm. Imagine moving around to a boss beat. As you move, you start to feel the rhythm in your step. Go ahead and walk around your room and feel this rhythm.
Note that リズム is probably going to be more common of a word to use for rhythm, but this is a kanji learning site after all. One thing you will see more often is 律動的 which means "rhythmic."
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.