Which builds more arm (bicep) muscle faster Lifting a 10 lb weight 10 times or a 2-3 lb weight 50 or so times?

Answer:
the diet ultimately determines the size of the muscles not the load that is used to stimulate them.the only way that a 10 lb weight would sufficiently stimulate a muscle would be if it was close to 70% or more of the 1 repetition maximum or about 15 lbs. if you are lifting loads that are below 60% of the 1RM no microtrauma will be induced in skeletal muscle so there will not be sufficient stimulation for growthlifting light loads is not optimum for strength, hypertrophy and definetly not for fat loss...

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More reps tone the muscle and more weight with fewer reps builds the muscle.

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The key to building muscle is lift the heaviest weight you can 10 times in a row. If your muscles are not sore the next day, you will not build muscle.

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Go for the higher weight if you want to build muscle, less weight and more reps to tone.

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15 reps of 10lb. do 3-5 sets of that. rest 30 seconds after each set.

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There is not fast way to bulid muscle. If you have not lifted weights start out with a light hand weight and bulid up from there. Here is an example of what to do.3 lb weight 10 times each arm for 3 reps every other day for 2 weeks, then move up to 5 lbs 10 times each arm for 3 reps every other day for 3weeks. Your muscles need to rest, over working will cause undo injury.You will want to make sure you do both arms and work your triceps, other wise your arms are gonna look unblanced, meaning you will have big biceps and turkey waddle triceps.

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It it's far better to find an in between where your body feels fine. That being said if you can curl 50 lbs 2 to 3 times which, by the way, is really hard, you should stick to curling 30 lbs to 35 lbs in repetions of 10-15 in sets of 3. EX. You should stick to doing 15 reps of the 30 in the first set and then 10-12 of the 35 in the second and finally 8-10 of the 35 in the last... if you feel that this is to hard you can use lighter weights and conversely if you find it easy you can move up in weights... The key is technique and if you want to focus on your biceps, I would do concentration curls which target that specific area exclusively...to tone means to give the muscle more definition... it will become more noticeable but not necessarily stronger... this is why you often see women working with lighter weights when they lift... it generally doesn't add bulk...

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lifting a heavier weight for less reps will bulk where lifting a lighter weight for more reps will tone

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