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Cardio only makes you lose muscle that you have gained. I dont use cardio in my workout.
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what look at me, I use cardio in my workouts, you must be doing it wrong. You might want to re-evaluate how you are doing your cardio.
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I have to agree, that my speed has decreased since i cut cardio out of my workout. I just hope when those zombies get in here i can run faster than you, so I'm not zombie food.
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