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The problem with unlimited (sethgodin.typepad.com)
If you work out on a weight machine that has a limit--where you have to push the bar until it stops--you're far more likely to to hit that limit than if you had left it to your own initiative to...
If you work out on a weight machine that has a limit--where you have to push the bar until it stops--you're far more likely to to hit that limit than if you had left it to your own initiative to...