For medium, the internal temperature should be 125Â°F. When the tenderloin is cooked the way you like it, let it rest at room temperature for 15 minutes before slicing. This will let the juices redistribute so the meat is juicy all over.
Foster does note, though, that Weight Watchers tends to be cheaper than many of its commercial weight loss rivals. (A Duke University study from earlier this year backs that up, showing an average annual price of about $377 for Weight Watchers, compared to an average of more than $2,500 for rival Jenny Craig.)
Jean Nidetch, center, at a publicity event in Times Square in 1973. Weight Watchers went public in 1968, turning its founders into multimillionaires, and in 1978 the company was sold to the H. J. Heinz Company for $71.2 million.