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A gym member arrives for a morning exercise class at Downsize Fitness Thursday, Jan. 3, 2013, in Addison, Texas. Downsize Fitness is a selective gym where the rule is that new members must tip the scales. New members are weighed and have their body mass index measured. (AP Photo/LM Otero)

Associated Press
A gym member arrives for a morning exercise class at Downsize Fitness Thursday, Jan. 3, 2013, in Addison, Texas.  Downsize Fitness is a selective gym where the rule is that new members must tip the scales. New members are weighed and have their body mass index measured. (AP Photo/LM Otero)
A gym member arrives for a morning exercise class at Downsize Fitness Thursday, Jan. 3, 2013, in Addison, Texas. Downsize Fitness is a selective gym where the rule is that new members must tip the scales. New members are weighed and have their body mass index measured. (AP Photo/LM Otero)
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