7 Simple Exercises That Show Results After Just One Workout

Muscles aren't built in a day—but that doesn't mean a solid workout can't give you instant definition. See, by performing certain moves—think, 3 to 5 sets of 8 to 12 reps—you force a ton of blood into your muscles'fast twitch or power fibers. Take any of the following seven exercises for a spin, then check yourself out in the mirror, good lookin'

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