Smart phones have a built in snooze for about nine minutes.
There is an interesting reason for this. Clock experts say when
snooze alarms were invented during the 1950s; the gears in alarm
clocks were standardized.
When the snooze gear
was introduced, its gears needed to mesh with the existing
gears. The engineers needed to choose between a gear that made
the snooze period nine-plus minutes or ten-plus minutes and
opted for nine. There was no scientific reason for this time
period. It was purely mechanical, just as it is with railroad
tracks, but that is another story. There are no scientific
papers published on benefits or detriments to using the snooze,
but there are many opinions for and against. Fortunately modern
technology allows us to use it or not and to change the snooze
time as we choose.
Incidentally, snooze means sleeping for a short period of
time.