Singer Jacket Jackson - who turns 41 next week - has always battled with her weight and she's revealed that her pop superstar brother Michael used to give her a 'word workout'.
'He called me names,' she says. 'You don't even want to know! They're not very nice - slaughter hog. There, I told you one, I'm not telling you any more. It gave me a complex. I've got issues.'
Janet, who is currently getting in shape for her first tour in five years, says that while she's excited about performing, she dreads having to get in shape for the stage.
'I don't have a favourite workout, I hate them all,' she tells Access Hollywood. 'I'm being so honest with you and I know it sounds terrible.
'I'm not at all nervous about the tour though, I'm excited.'