- Theseincludeliftswithdumbbellsandbarbells.Barbellsanddumbbellsareclassicstrengthtrainingtools.Problemsarelikethedumbbellsatthegym.Ifyoudespisemachines,buteagerlygrabthatsetofdumbbells,thengoforit.Haveasetofdumbbellsreadytogounderyourdesk.Thedumbbells...
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