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Test Shred Incorporate plyometric exercises into your muscle-building routine. These exercises let you create fast-twitching muscle fibers that can help build muscle. Plyometrics are like ballistic moves in that they require some acceleration. Squat jumps are an example of plyometrics, because as you come up from the squat position, you jump as high as possible with your arms extended toward the ceiling, and as you land, you go into the squat before repeating the jump.





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