First of all, you don't need to prepare in advance. Let the students sit and ride for 40 minutes. After about three minutes or a song, you can shout three postures (holding the front posture) to stand up and then push away. In the meantime, you can just shout slogans.
After that, you can play a short piece of D music. As above, just change the time of the mount to ten seconds.
Finally, slow down the music and do some tidying exercises. (such as stretching legs, taking a deep breath, relaxing shoulder muscles, leg press, etc.). Don't tell me you can't. . . )
I paid the price for my skills. . .