Anywhere from 30 to 45, depending on genetics and activity.
How do you know when a chick has hit "the wall"?
No longer gets free drinks
Cut her hair shorter than shoulder length
Has kids and keeps a mom belly as a result
Wears more jewelry to distract from her appearance
Actually responds to a male less than 10/10
Suddenly desperate for marriage
Can understand the concept of loneliness
The question remains, do you grab the food at a discount because it's about to spoil or let it rot?