yo-yo dieting
Noun
Meaning
yo-yo dieting (uncountable)
A series of failed diets that cause a person to lose and gain weight alternately.
Examples
When I hit my thirties, that's when I calmed down and I wasn't so tough on myself. I wasn't doing the yo-yo dieting any more. I gave myself a break. I think that, if you're more accepting of yourself, you're more free and open and can just allow more people in.