If you are talking about "offseason" like from bb comp, you need to consider how much weight/bodyfat you can lose in the "season" time and how much of a shock your metabolism can sustain when you do go to lose it. I wouldn't recommend being more than 15 lbs off. (Just my personal opinion.) I would think something between 12 & 15 % is reasonable - below 11% my menstrual cycle shot off, so I wouldn't want to go lower than that for any long period of time either.