As any bodybuilder can attest, muscles grow when we make them do more work. Now, new research explains how muscle cells translate weight-lifting overload into bulk. The secret lies with a chemical ...

An elite bodybuilder said he uses an exercise technique called slow negatives to build more muscle. Also called eccentric reps, negatives can help optimize gains by putting more tension on the muscle.

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Scientists have devised a way to develop bigger, stronger muscle fibers. But instead of popping up on the bicep of a bodybuilder, these muscles grow on a tiny scaffold or 'chip' molded from a type of ...