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Dear Melanie,

Thanks for that Question. Yes, indeed a rowing machine can tone your stomach.  It is a great exerciser with some cautions. First, if you have back trouble or knee problems it is best to stay away from rowing unless you have expert advice personally. It is one of the machines which can work aerobically, and strengthen uppers, lowers and trunk all during the same session, sitting down!!

G. L. Dixon, MD