abstract:Yo-yo dieting or yo-yo effect, also known as weight cycling, is a term "yo-yo dieting" coined by Kelly D. Brownell at Yale University, in reference to the cyclical loss and gain of weight, resembling the up-down motion of a yo-yo.
If his scale hadn't been hooked up to the internet, sending and charting his weight, he would not have noticed the "seasonal yo-yo effect" in his weight, he said.