What does caesura do in literature?

A stop or pause in a metrical line, often marked by punctuation or by a grammatical boundary, such as a phrase or clause. A medial caesura splits the line in equal parts, as is common in Old English poetry (see Beowulf).

How is a caesura helpful when a poet recites a poem?

Caesura in poetry marks a pause from the natural rhythm. ... Caesura can be medial (occurring in the middle of a line", initial (occurring at the beginning of a line), or terminal (occurring at the end of a line). Caesura is used purposefully, helping in the rhythm of the piece to create a desired effect.