7 Ways People Woke Up, Pre-Alarm Clock

I threw my alarm clock out of the door the moment I retired from work. But in the old days, when there were no alarm clocks, how did people wake up?

Roosters, I hear you say! Nope! Roosters will (and do) 'cock a doodle doo' all night long, if they're awake. So, how did people wake up?