<p>I do 4 sets of 30 curls (bicep) and several other arm exercises with 8 or 10 pound dumbbells daily. Curls, side lifts, fly lifts, straight up over your head, <br>
It seems to work just fine ... I actually did some hand held video with a 200-400 f/4 lens and a lot of hand held video (up to 10 minutes) with a 70-200 f/2.8 lens.<br>
The only cost was for the dumbbells (about 35.00 for a set of three pairs, 2 pound, 6 pound and 8 pound). And it takes 30 minutes a day for 3 or 4 months to build up the muscle.<br>
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