I wonder exactly how many of you reading this have used alternating curls for your arms. If Xtreme Fit 360, I want to ask you this: maybe you have asked yourself why you are doing them? Consider Xtreme Fit 360, you never execute alternating repetitions for most different exercises. When was the last moment you did an leg press, alternating overhead triceps extensions, or changing knee extensions? Likely never. Nonetheless it's frequent to find out people copying in doing alternating arms…