You mean, where you do Yoga with Mom?
If you go Lisa GF route, eventually she says that you'll have to be fit to be her boyfriend (and you'll need to pay her $1000). This lets you ask Mom to do yoga at 7:00 AM every morning (to make sure you are awake then, go to sleep no later than 1:00).
Also, another question for anyone that's a little farther in the game: I don't quite remember, but I'm fairly sure Mom still hasn't sat down to talk with me and Alice. Is there anything special you have to do, or is it just random chance? I
do remember that Alice has already caught me and Mom and sat us down; does that mean that Mom sat me and Alice down but I don't remember?