I am 5'8, 140 lbs and I am pretty skinny. It may not seem like it, but I am kind of small for my height. I need some tips on how to get a six pack and ripped quickly. I have been doing 250 pushups and 500 crunches a day, and I do curls with 20 lbs dumbells about 100 reps a day. Is this enough to put on more muscle on my arms an on my abs? I have noticed that I have gotten stronger, but I am just wondering if there are any exercises to get my arms and my abs more toned. Please help. Thanks.
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