{
  "presentation": "complete-card",
  "format_version": 3,
  "overview": "Body recomposition, or recomp, means losing body fat while gaining muscle during the same period. People pursue it through resistance training and attention to food; it is a goal, rather than a workout.",
  "overview_sources": "Vargas-Molina et al. · 2026",
  "overview_source_ids": [
    "fit46-body-recomp-vargas-molina-2026"
  ],
  "sections": [
    {
      "role": "explanation",
      "title": "What pursuing both changes involves",
      "items": [
        {
          "label": "Recomp does not require a perfectly flat scale.",
          "text": "A trial in young men found fat loss alongside increased lean body mass while they ate below their energy needs. That intensive, four-week experiment shows the two changes can coexist; its demanding exercise and diet are not a routine to copy. Losing weight does not automatically rule out recomp.",
          "source": "Longland et al. · 2016",
          "source_ids": [
            "fit46-body-recomp-longland-2016"
          ]
        },
        {
          "label": "Regular resistance training supplies the muscle-building work.",
          "text": "ACSM describes training the major muscle groups at least twice weekly. Weights, bands and bodyweight are options, so a gym membership is optional. The practical commitment is repeated training and recovery; there is no special recomp exercise or required split.",
          "source": "ACSM · 2026",
          "source_ids": [
            "fit-rebuild-body-recomp-acsm-2026"
          ]
        },
        {
          "label": "Protein matters alongside overall food intake.",
          "text": "ISSN gives 1.4–2.0 grams of protein per kilogram of body weight per day as sufficient for most exercising adults. This is general exercise guidance, not a guaranteed recomp target. Calorie needs, training experience and dietary restriction change the context.",
          "source": "ISSN · 2017",
          "source_ids": [
            "fit-guide-a-cut-issn-protein"
          ]
        },
        {
          "label": "Measurements describe different parts of the change.",
          "text": "Scale weight combines fat, muscle and other tissues. Even DXA, also called DEXA, estimates body composition and can shift with hydration and stored carbohydrate. A scan's lean-mass gain is not a direct measurement of new muscle; waist, photos and training records provide additional context.",
          "source": "ISSN · 2017",
          "source_ids": [
            "fit-rebuild-body-recomp-issn-diets"
          ]
        },
        {
          "label": "One unchanged scale number cannot identify the change.",
          "text": "Imagine two readings of 80 kg a month apart. In one hypothetical case, fat falls by 1 kg and other mass rises by 1 kg; in another, neither changes. Both finish at 80 kg. The subtraction explains why scale stability alone cannot prove recomp, and why a scan's 'lean mass' should not automatically be renamed muscle.",
          "source": "Illustrative measurement comparison",
          "provenance": "editorial-illustration-20261020"
        }
      ]
    },
    {
      "role": "benefits",
      "title": "What it may achieve",
      "items": [
        {
          "label": "Both changes are possible beyond the first weeks of lifting.",
          "text": "In a 10-week trial of trained adults, a modest-deficit group lost fat and gained fat-free mass. Supervised training, only 30 participants and a predominantly male sample limit how widely that result applies.",
          "source": "Vargas-Molina et al. · 2026",
          "source_ids": [
            "fit46-body-recomp-vargas-molina-2026"
          ]
        },
        {
          "label": "Strength can improve even when muscle growth is limited.",
          "text": "A review found that energy restriction reduced lean-mass gains more consistently than strength gains. Getting stronger is useful, but does not prove new muscle growth.",
          "source": "Murphy & Koehler · 2022",
          "source_ids": [
            "fit46-body-recomp-energy-deficit-review"
          ]
        }
      ]
    },
    {
      "role": "cautions",
      "title": "Good to know",
      "items": [
        {
          "label": "A harder diet can work against the muscle-gain goal.",
          "text": "Larger energy deficits made lean-mass gains harder. The review's calorie estimates describe study averages, not a personal safety threshold. Recomp is not a reason to combine severe restriction with ever more training.",
          "source": "Murphy & Koehler · 2022",
          "source_ids": [
            "fit46-body-recomp-energy-deficit-review"
          ]
        },
        {
          "label": "Food and body tracking can become distressing.",
          "text": "Rigid food rules, compulsive exercise or anxiety around weight deserve attention. Fainting or disordered-eating concerns need a clinician; more tracking is not the solution.",
          "source": "NHS · 2024",
          "source_ids": [
            "fit46-body-recomp-nhs-eating-disorders"
          ]
        },
        {
          "label": "Prescription medicines add a medical context.",
          "text": "GLP-1 muscle-maintenance questions are a separate discussion. Recomp talk does not establish what to change while taking a prescription; that belongs with the prescriber.",
          "source": "Community",
          "provenance": "preserved-community-record"
        }
      ]
    },
    {
      "role": "community",
      "title": "From community discussion",
      "items": [
        {
          "label": "Maintain-and-lift talk usually means a longer project.",
          "text": "Reports describe food near maintenance—roughly enough to hold weight—adequate protein and progressive lifting, meaning gradually doing more with the exercises. The 8–16-week comparison window is an example, not a deadline. A two-week scale panic sometimes turns into abrupt restriction and a different goal.",
          "source": "Community",
          "provenance": "preserved-community-record"
        },
        {
          "label": "Clothes, tape and photos can feel more encouraging than weight.",
          "text": "Reports include better-fitting clothes after eight weeks of lifting despite unchanged weight. People compare waist measurements, similar photos and lift logs; some use an occasional DEXA scan. Conflicting signals can feel reassuring or frustrating, and none alone establishes how much muscle was gained.",
          "source": "Community",
          "provenance": "preserved-community-record"
        },
        {
          "label": "Losing inches can still leave someone unsure about food.",
          "text": "A r/leangains poster reported going from 71.5 to 69.5 kg and losing three waist inches in two months, with four upper/lower training days and 135 grams of protein daily. They wanted to stop losing weight and called managing the diet the hard part. Replies disagreed about maintenance versus a deficit.",
          "source": "Community · Reddit · 2026",
          "source_ids": [
            "fit46-body-recomp-leangains-two-months"
          ]
        },
        {
          "label": "Months of consistency can bring little visible change.",
          "text": "A r/PetiteFitness poster felt better after six months of lifting, but described little physique change, recent fatigue and falling motivation. They also reported an unchanged DEXA body-fat percentage. Replies favored different paths, including more food or patience; they could not establish the cause of the plateau.",
          "source": "Community · Reddit · 2025",
          "source_ids": [
            "fit46-body-recomp-petitefitness-six-months"
          ]
        },
        {
          "label": "People disagree about waiting or choosing a cut and bulk.",
          "text": "In r/loseit, one poster reported a four-centimeter smaller waist after five months with only one kilogram lost. Another got stronger but saw little body change after three to four months and switched to a cut. A separate reply described looking leaner without counting calories. These are different experiences, not proof of one best approach.",
          "source": "Community · Reddit",
          "source_ids": [
            "fit46-body-recomp-loseit-mixed-experiences"
          ]
        },
        {
          "label": "Training history and competing goals change the discussion.",
          "text": "T Nation replies disagreed about efficiency after two years of lifting, describing beginners, returning lifters and people with more fat differently. The poster was also marathon training and said cutting had conflicted with performance. Replies stressed deciding which goal mattered most.",
          "source": "Community · T Nation · 2026",
          "source_ids": [
            "fit-rebuild-body-recomp-tnation-thread"
          ]
        },
        {
          "label": "Naming the nutrition phase makes goals clearer.",
          "text": "A cut puts fat loss first, a bulk emphasizes gaining, and a mini-cut is a shorter fat-loss phase. Recomp pursues both changes together; a reverse diet describes increasing intake after restriction. These labels help explain why people expect different measurement trends.",
          "source": "Community",
          "provenance": "preserved-community-record"
        }
      ]
    }
  ],
  "related": [
    "a-cut",
    "lean-vs-dirty-bulk",
    "mini-cut",
    "reverse-diet",
    "progressive-overload"
  ]
}
