JP is right, they are not made of glass. Just to give you an idea, I trained a guy who was 75 yrs old and he was deadlifting 165lbs by the time I finished with him.
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\"The strongest steel goes through the hottest fires.\"-Anonymous
\"When you begin to believe nothing is heavy, all weights become light.\" -Rossbow
\"Just remember, somewhere there is a little Chinese girl warming up with your max.\"-Jim Convroy
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