My friend has always been quite big and ever since I've known her she has been doing a different diet - Weight Watchers, Slimming World and Special K.
She loses about a stone and then puts it back on.
She intended to lose a "shit load of weight" as she is being a bridesmaid for her sister in June and she announced that she's going to do The Special K Diet.
I really had to bite my tongue as I just don't feel it's my place but I just wish she'd stop doing faddy diets like Special K, where you only lose weight because you've restricted your calories and will gain the weight back if you go back to how you were eating before.