i am 14, boy, 125 pounds. i have access to 5,20,30,40 pound dumbbells. i currently do 20 reps of 20 twice a day. is that good? for a standard dumbbell bicep curl?
Posted on 26 January 2010.
i am 14, boy, 125 pounds. i have access to 5,20,30,40 pound dumbbells. i currently do 20 reps of 20 twice a day. is that good? for a standard dumbbell bicep curl?
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