@Jesii_ca_M I was a massage therapist for many years. Dated a girl with F. Told her as long as she never got a reduction I'd massage her back whenever it was sore.
So, get the size you like and make someone give you massage when you're sore. Problem solved.
@dbs_10_10 Bestie would be between 18 and Bulma. Both don't seem adverse to getting their hands dirty. Bulma seems like someone fun to work with while 18 seems more like someone I'd hit the town with.