UKFightFreak: are you talking isometrics or plyometrics? I've often heard the advice to be able to squat one and a half times your body weight and deadlift at least your body weight in regards to some plyometric excercises, but never about isometrics. The definitions I'm thinking of for the two have plyometrics going from full extension to full contraction in as little time as possible for explosive power such as a drop jump whereas isometrics would be to push or pull against a stationary object in order to make muscle more toned such as trying to curl a countertop.