Maintenance rehearsal, or rote rehearsal, is when someone repeatedly says a piece of information out loud in the hopes of being able to remember it easier. It’s thought our short-term memory is able to hold about 12-30 seconds worth of stuff, but using maintenance rehearsal is thought to increase it.
Note, it doesn’t help with storing stuff in our long-term memories. For that, there are techniques called elaborative rehearsal. None of these rehearsals are clearly as bad as my own version in grade school where I had to dress up as the Bride of Chucky, although the memory of it was clearly stored.