This is the 897th most frequent Russian word.
занимается
"Engages in" or "is occupied with."
Here, 'занимается' is used to indicate involvement or engagement in an activity, such as practicing a hobby or subject of study.
Моя сестра занимается музыкой.
My sister studies (is engaged in practicing) music.
In this instance, 'занимается' conveys participation in a regular activity, emphasizing the continuity of physical activity.
Он занимается спортом каждый вечер.
He practices sports every evening.
Here, 'занимается' is used in the sense of studying or dedicating oneself to academic work, specifying the location.