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Undo levels require memory ; the more undo levels you use , the more system memory is consumed . I was under the impression the more calories you burn , the more fat you will lose . Look at your life , at the habits you have , at the friends you have , the things you love , and just imagine for a second , if it was all gone . you 'll see it in the things we develop , the things we acquire , " Cooper added . However , as for any 300-level course , the more mathematics and / or statistics you know , the better off you will be .