Try using 20% of your max and focus on keeping your back as straight as possible. 50 'S I usually use when I curl, and when I tried it I had trouble getting through a set of 8 to 30 pounds. It forces the biceps area only work and reduces the stress on your lower back. I see people using really heavy weights swinging their backs wildly trying to look cool. Little do they know people do not give a crap about how much they can curl, all they do is set up for an injury. The same applies to any other exercise you do in the gym. If you lift the guile and do not do well, you're just cheating yourself. 2. Do not give your all How many of you have left the gym thinking, "damn I'm not really that tired" or "I have something to do tomorrow, so I take it easy." The funny thing is that we always have something to do tomorrow. So this trend keeps going and you never really anywhere.
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