Meaning of aerobic. Living healthy. To practice. Eat a nice meal. And of course argue with the slave when needed.
Lola, Avril, Elly and Megan are personal fitness trainers. Their roommate is a weak and thin slave, who constantly teases them. Every time they practice, he's looking for a fight. But he doesn't get a quarrel but a beating.
He has also been in the gym and has muscle soreness. But girls are ruthless.
The girls have short fingernails. That is not a problem. They have long toenails.