When can you stop weighing yourself? Whenever you want to, but if you really want to keep losing weight, it’s best to weigh-in at least once a week. That’s the conclusion of researchers at Cornell University’s Food and Brand Lab, where scientists analyzed 2,838 weight measurements (up to a years’ worth of weigh-ins) from 40 overweight people who were trying to lose weight.  A Cornell news release reports that the researchers found that the more frequently people weighed in, the more weight they lost. The average time that participants could go between weighting without gaining weight was 5.8 days. Round that off to a week and you should be fine.