The mani/pedis, the highlights, workouts, facials, waxing, botox, etc. that keep Cougars 'in the hunt.' Otherwise, without said Cougar Maintenance, the Cougar risks looking like an Old Whore.
"Where's Tina today? Oh, she had to go for some Cougar Maintenance at the spa."
"Did you see Rachel? Girlfriend better go do some Cougar Maintenance."