Creatine pulls water into muscle cells for a temporary size boost, but the real benefit is better gym performance and recovery. That extra strength and power lets you lift harder, which builds actual muscle if you're eating right.
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Does creatine make your muscles bigger? No, and yes, a little bit. There's two things that creatine can do. The first thing stores more water in your muscles, so yeah, it can give the appearance that your muscles grew. But the one that you guys need to actually focus on is your performance and recovery, and that's the second thing that it can do for your muscles. When you're in the weight room, it can actually help improve your performance, improve your lifts, improve your explosiveness, improve your power. When you're able to do a few more reps or be a little bit more powerful or get a little bit more out of your strength training, then that can translate into increased muscle growth an increased muscle response so that your muscles can grow if you pair it with the right nutrition.