Another thing, you're just as strong http://www.flexeasy.net/does-glucosamine-work/ as your weakest link. So always work on your weak muscles. One method to figure this out is to train the body unilaterally in the beginning to see what is lagging behind. When you know, invest more time on that specific side. Also, keep in mind that your grip determines your stamina - if your grip is weak, you won't be able to bench as much. The most typical weakness I've seen are hamstrings while the glutes get too strong. Typically, both the lower and upper back have the tendency to be weak causing injury.
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