Spousal Unit deliberately taught 8 o'clocks and 9 o'clocks. As he said, there are no innocent bystanders at an 8 o'clock class, and he felt he got better students. Considering some of his classes attracted fluff seekers, the time of day weeded them out.
For those who fell asleep, he stopped lecturing and stood in front of the student. The class was silent. He dropped a very heavy book on the floor. Student wakes up. He continued with his lecture.
And if you looked on the vaunted "Rate My Professors", his lectures pretty much got good reviews. Except from sleepers.
As for skaters waking up for early practice, another story about Jason (I'm sorry, he's the skater I know the most about.

)
As a teen, Jason's parents insisted he live at home with his family and attend public school. Therefore, practice times were exceedingly early. His parents said to him, we will get up at whatever hour of the morning and drive you to practice. But this has to be
your idea. We are not waking you up for practice. You need to want it enough to get yourself up and to get us.
the rest is history. (as in he went to practice)