Personal Trainer Course Series: The 7-Day Muscle Plan: Why Muscle Gets Harder to Build With Age
As we get older, muscle becomes less responsive to the usual “grow” signals from protein and training. Researchers (Keng et al. 2025) call this anabolic resistance, which is dampened muscle protein synthesis (MPS) response to amino acids and mechanical loading that nudges the body towards muscle loss over time. Mechanisms…
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