"yo-yo dieting" meaning in English

{
  "etymology_text": "Akin to a yo-yo, which alternates between upward and downward movement.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "yo-yo dieting (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Dutch translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nutrition",
          "orig": "en:Nutrition",
          "parents": [
            "Health",
            "Body",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A series of failed diets that cause a person to lose and gain weight alternately."
      ],
      "id": "en-yo-yo_dieting-en-noun-444GRnSt",
      "links": [
        [
          "series",
          "series"
        ],
        [
          "failed",
          "failed"
        ],
        [
          "diet",
          "diet"
        ],
        [
          "lose",
          "lose"
        ],
        [
          "gain",
          "gain"
        ],
        [
          "weight",
          "weight"
        ],
        [
          "alternately",
          "alternately"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "liūliūqiú xiàoyìng",
          "sense": "series of failed diets",
          "word": "溜溜球效應 /溜溜球效应"
        },
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "series of failed diets",
          "tags": [
            "neuter"
          ],
          "word": "jojo-effect"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "series of failed diets",
          "word": "jojolaihdutus"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "series of failed diets",
          "word": "jojolaihduttaminen"
        }
      ],
      "wikipedia": [
        "Weight cycling"
      ]
    }
  ],
  "word": "yo-yo dieting"
}

{
  "etymology_text": "Akin to a yo-yo, which alternates between upward and downward movement.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "yo-yo dieting (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Entries with translation boxes",
        "Mandarin terms with redundant transliterations",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Dutch translations",
        "Terms with Finnish translations",
        "Terms with Mandarin translations",
        "en:Nutrition"
      ],
      "glosses": [
        "A series of failed diets that cause a person to lose and gain weight alternately."
      ],
      "links": [
        [
          "series",
          "series"
        ],
        [
          "failed",
          "failed"
        ],
        [
          "diet",
          "diet"
        ],
        [
          "lose",
          "lose"
        ],
        [
          "gain",
          "gain"
        ],
        [
          "weight",
          "weight"
        ],
        [
          "alternately",
          "alternately"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "Weight cycling"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "liūliūqiú xiàoyìng",
      "sense": "series of failed diets",
      "word": "溜溜球效應 /溜溜球效应"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "series of failed diets",
      "tags": [
        "neuter"
      ],
      "word": "jojo-effect"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "series of failed diets",
      "word": "jojolaihdutus"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "series of failed diets",
      "word": "jojolaihduttaminen"
    }
  ],
  "word": "yo-yo dieting"
}