Why You Shouldn't Trust the Numbers on Weight Machines
by Beth Skwarecki from Lifehacker on (#5KTJP)
Why can you do 250 pounds on the leg press at your usual gym, but only 200 if you go to a different location across town? You didn't suddenly get weaker, and contrary to a popular myth, it's not because one gym is lying to flatter you. Machines are just different.