Zero.
Well, I guess I won't be doing Pilates since my parents just got home and I don't like people watching me do a workout.
Although now my mom is annoying me by having the volume of her electronic handheld pinball game turned up. And even though I said, "That's really annoying," she just responded with, "I'm playing it and it's not annoying me," and I said, "Yeah, 'cause you're the one playing it." She didn't say anything else after it and just kept playing the game without either turning the volume down or muting it.
Makes me wish my bedroom was carpeted so I could go up there to get away from her and do Pilates.