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The original was posted on /r/science by /u/mvea on 2025-06-29 20:30:16+00:00.

Original Title: Lifting weights secretes an age-defying myokine that keeps the body youthful. Resistance training boosts a youth-linked protein called CLCF1 finds study in mice. Cardio alone may not trigger CLCF1 in older adults. Strength training can also slow age-related muscle and bone loss.