I don't know what is special about this question: Use sleep with minutes and seconds

This question is about the use of a basic shell function, can anyone explain to me what is difficult about a command like that (for which we only need read a little of the manual, like we say: RTFM!)?

This question has more views and more votes than some others that are more better and more instructive, so I didn't expect a success like that.

NB: I know this question won't be well received, but I really need explanation for this