How to determine muscle or fat loss based on measurements?

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So in less than a week I lost an inch off of my waist. Does this mean I lost fat or muscle, or was I probably bloated when I took the earlier measurement? I also want would appreciate if you could tell me what losing or adding inches on a specific body part means. Ex) losing on thighs means fat loss or losing on arms means muscle loss :))

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  • SideSteel
    SideSteel Posts: 11,068 Member
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    It's likely a combination of fluid and probably some fat.

    If you are lifting weights and getting stronger, if you are consuming adequate protein, and if you are not losing weight too rapidly (greater than about 1% change in BW/week) then you're very likely doing everything you can to retain muscle.