In short, yes.
I'm 181 on my way back down to 165ish, and while I'm 11lbs over 170 im too small to fight at 170. My natural top form weight is 165, I can feel great and lean there. There are guys I train with that fight at 170, and they have size on me. Don't get me wrong it probably won't be a huge deal breaker, but it would be a disadvantage however.
Edit: me personally, if I was going to compete at 155. I'd stay around 165, diet down 5 or so pounds then cut the rest the day of weigh ins.
If a law is unjust, a man is not only right to disobey it, he is obligated to do so. ~ Thomas Jefferson
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Last edited by xeberus : 05-01-2012 at 04:23 PM.