Is 4 sets of 12 reps good?

There’s no definitive answer to this question since everyone’s body is different and will respond differently to various amounts of reps. However, in general, 4 sets of 12 reps is a good place to start if you’re looking to build muscle mass.

This number of reps allows you to lift enough weight that you’re challenging your muscles but not so much that you’re putting yourself at risk for injury. And by doing 4 sets, you’ll be able to fatigue your muscles sufficiently so that they continue growing over time.

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